opencode support

apps/server/src/providers/index.ts

@@ -25,5 +25,8 @@ export { ClaudeProvider } from './claude-provider.js';
 export { CursorProvider, CursorErrorCode, CursorError } from './cursor-provider.js';
 export { CursorConfigManager } from './cursor-config-manager.js';
 
+// OpenCode provider
+export { OpencodeProvider } from './opencode-provider.js';
+
 // Provider factory
 export { ProviderFactory } from './provider-factory.js';

apps/server/src/providers/opencode-provider.ts

@@ -0,0 +1,605 @@
+/**
+ * OpenCode Provider - Executes queries using opencode CLI
+ *
+ * Extends CliProvider with OpenCode-specific configuration:
+ * - Event normalization for OpenCode's stream-json format
+ * - Model definitions for anthropic, openai, and google models
+ * - NPX-based Windows execution strategy
+ * - Platform-specific npm global installation paths
+ *
+ * Spawns the opencode CLI with --output-format stream-json for streaming responses.
+ */
+
+import * as path from 'path';
+import * as os from 'os';
+import { CliProvider, type CliSpawnConfig } from './cli-provider.js';
+import type {
+  ProviderConfig,
+  ExecuteOptions,
+  ProviderMessage,
+  ModelDefinition,
+  InstallationStatus,
+  ContentBlock,
+} from '@automaker/types';
+import { stripProviderPrefix } from '@automaker/types';
+import { type SubprocessOptions } from '@automaker/platform';
+
+// =============================================================================
+// OpenCode Stream Event Types
+// =============================================================================
+
+/**
+ * Base interface for all OpenCode stream events
+ */
+interface OpenCodeBaseEvent {
+  /** Event type identifier */
+  type: string;
+  /** Optional session identifier */
+  session_id?: string;
+}
+
+/**
+ * Text delta event - Incremental text output from the model
+ */
+export interface OpenCodeTextDeltaEvent extends OpenCodeBaseEvent {
+  type: 'text-delta';
+  /** The incremental text content */
+  text: string;
+}
+
+/**
+ * Text end event - Signals completion of text generation
+ */
+export interface OpenCodeTextEndEvent extends OpenCodeBaseEvent {
+  type: 'text-end';
+}
+
+/**
+ * Tool call event - Request to execute a tool
+ */
+export interface OpenCodeToolCallEvent extends OpenCodeBaseEvent {
+  type: 'tool-call';
+  /** Unique identifier for this tool call */
+  call_id?: string;
+  /** Tool name to invoke */
+  name: string;
+  /** Arguments to pass to the tool */
+  args: unknown;
+}
+
+/**
+ * Tool result event - Output from a tool execution
+ */
+export interface OpenCodeToolResultEvent extends OpenCodeBaseEvent {
+  type: 'tool-result';
+  /** The tool call ID this result corresponds to */
+  call_id?: string;
+  /** Output from the tool execution */
+  output: string;
+}
+
+/**
+ * Tool error event - Tool execution failed
+ */
+export interface OpenCodeToolErrorEvent extends OpenCodeBaseEvent {
+  type: 'tool-error';
+  /** The tool call ID that failed */
+  call_id?: string;
+  /** Error message describing the failure */
+  error: string;
+}
+
+/**
+ * Start step event - Begins an agentic loop iteration
+ */
+export interface OpenCodeStartStepEvent extends OpenCodeBaseEvent {
+  type: 'start-step';
+  /** Step number in the agentic loop */
+  step?: number;
+}
+
+/**
+ * Finish step event - Completes an agentic loop iteration
+ */
+export interface OpenCodeFinishStepEvent extends OpenCodeBaseEvent {
+  type: 'finish-step';
+  /** Step number that completed */
+  step?: number;
+  /** Whether the step completed successfully */
+  success?: boolean;
+  /** Optional result data */
+  result?: string;
+  /** Optional error if step failed */
+  error?: string;
+}
+
+/**
+ * Union type of all OpenCode stream events
+ */
+export type OpenCodeStreamEvent =
+  | OpenCodeTextDeltaEvent
+  | OpenCodeTextEndEvent
+  | OpenCodeToolCallEvent
+  | OpenCodeToolResultEvent
+  | OpenCodeToolErrorEvent
+  | OpenCodeStartStepEvent
+  | OpenCodeFinishStepEvent;
+
+// =============================================================================
+// Tool Use ID Generation
+// =============================================================================
+
+/** Counter for generating unique tool use IDs when call_id is not provided */
+let toolUseIdCounter = 0;
+
+/**
+ * Generate a unique tool use ID for tool calls without explicit IDs
+ */
+function generateToolUseId(): string {
+  toolUseIdCounter += 1;
+  return `opencode-tool-${toolUseIdCounter}`;
+}
+
+/**
+ * Reset the tool use ID counter (useful for testing)
+ */
+export function resetToolUseIdCounter(): void {
+  toolUseIdCounter = 0;
+}
+
+// =============================================================================
+// Provider Implementation
+// =============================================================================
+
+/**
+ * OpencodeProvider - Integrates opencode CLI as an AI provider
+ *
+ * OpenCode is an npm-distributed CLI tool that provides access to
+ * multiple AI model providers through a unified interface.
+ */
+export class OpencodeProvider extends CliProvider {
+  constructor(config: ProviderConfig = {}) {
+    super(config);
+  }
+
+  // ==========================================================================
+  // CliProvider Abstract Method Implementations
+  // ==========================================================================
+
+  getName(): string {
+    return 'opencode';
+  }
+
+  getCliName(): string {
+    return 'opencode';
+  }
+
+  getSpawnConfig(): CliSpawnConfig {
+    return {
+      windowsStrategy: 'npx',
+      npxPackage: 'opencode-ai@latest',
+      commonPaths: {
+        linux: [
+          path.join(os.homedir(), '.npm-global/bin/opencode'),
+          '/usr/local/bin/opencode',
+          '/usr/bin/opencode',
+          path.join(os.homedir(), '.local/bin/opencode'),
+        ],
+        darwin: [
+          path.join(os.homedir(), '.npm-global/bin/opencode'),
+          '/usr/local/bin/opencode',
+          '/opt/homebrew/bin/opencode',
+          path.join(os.homedir(), '.local/bin/opencode'),
+        ],
+        win32: [
+          path.join(os.homedir(), 'AppData', 'Roaming', 'npm', 'opencode.cmd'),
+          path.join(os.homedir(), 'AppData', 'Roaming', 'npm', 'opencode'),
+          path.join(process.env.APPDATA || '', 'npm', 'opencode.cmd'),
+        ],
+      },
+    };
+  }
+
+  /**
+   * Build CLI arguments for the `opencode run` command
+   *
+   * Arguments built:
+   * - 'run' subcommand for executing queries
+   * - '--format', 'stream-json' for JSONL streaming output
+   * - '-q' / '--quiet' to suppress spinner and interactive elements
+   * - '-c', '<cwd>' for working directory
+   * - '--model', '<model>' for model selection (if specified)
+   * - '-' as final arg to read prompt from stdin
+   *
+   * The prompt is NOT included in CLI args - it's passed via stdin to avoid
+   * shell escaping issues with special characters in content.
+   *
+   * @param options - Execution options containing model, cwd, etc.
+   * @returns Array of CLI arguments for opencode run
+   */
+  buildCliArgs(options: ExecuteOptions): string[] {
+    const args: string[] = ['run'];
+
+    // Add streaming JSON output format for JSONL parsing
+    args.push('--format', 'stream-json');
+
+    // Suppress spinner and interactive elements for non-TTY usage
+    args.push('-q');
+
+    // Set working directory
+    if (options.cwd) {
+      args.push('-c', options.cwd);
+    }
+
+    // Handle model selection
+    // Strip 'opencode-' prefix if present, OpenCode uses format like 'anthropic/claude-sonnet-4-5'
+    if (options.model) {
+      const model = stripProviderPrefix(options.model);
+      args.push('--model', model);
+    }
+
+    // Use '-' to indicate reading prompt from stdin
+    // This avoids shell escaping issues with special characters
+    args.push('-');
+
+    return args;
+  }
+
+  // ==========================================================================
+  // Prompt Handling
+  // ==========================================================================
+
+  /**
+   * Extract prompt text from ExecuteOptions for passing via stdin
+   *
+   * Handles both string prompts and array-based prompts with content blocks.
+   * For array prompts with images, extracts only text content (images would
+   * need separate handling via file paths if OpenCode supports them).
+   *
+   * @param options - Execution options containing the prompt
+   * @returns Plain text prompt string
+   */
+  private extractPromptText(options: ExecuteOptions): string {
+    if (typeof options.prompt === 'string') {
+      return options.prompt;
+    }
+
+    // Array-based prompt - extract text content
+    if (Array.isArray(options.prompt)) {
+      return options.prompt
+        .filter((block) => block.type === 'text' && block.text)
+        .map((block) => block.text)
+        .join('\n');
+    }
+
+    throw new Error('Invalid prompt format: expected string or content block array');
+  }
+
+  /**
+   * Build subprocess options with stdin data for prompt
+   *
+   * Extends the base class method to add stdinData containing the prompt.
+   * This allows passing prompts via stdin instead of CLI arguments,
+   * avoiding shell escaping issues with special characters.
+   *
+   * @param options - Execution options
+   * @param cliArgs - CLI arguments from buildCliArgs
+   * @returns SubprocessOptions with stdinData set
+   */
+  protected buildSubprocessOptions(options: ExecuteOptions, cliArgs: string[]): SubprocessOptions {
+    const subprocessOptions = super.buildSubprocessOptions(options, cliArgs);
+
+    // Pass prompt via stdin to avoid shell interpretation of special characters
+    // like $(), backticks, quotes, etc. that may appear in prompts or file content
+    subprocessOptions.stdinData = this.extractPromptText(options);
+
+    return subprocessOptions;
+  }
+
+  /**
+   * Normalize a raw CLI event to ProviderMessage format
+   *
+   * Maps OpenCode event types to the standard ProviderMessage structure:
+   * - text-delta -> type: 'assistant', content with type: 'text'
+   * - text-end -> null (informational, no message needed)
+   * - tool-call -> type: 'assistant', content with type: 'tool_use'
+   * - tool-result -> type: 'assistant', content with type: 'tool_result'
+   * - tool-error -> type: 'error'
+   * - start-step -> null (informational, no message needed)
+   * - finish-step with success -> type: 'result', subtype: 'success'
+   * - finish-step with error -> type: 'error'
+   *
+   * @param event - Raw event from OpenCode CLI JSONL output
+   * @returns Normalized ProviderMessage or null to skip the event
+   */
+  normalizeEvent(event: unknown): ProviderMessage | null {
+    if (!event || typeof event !== 'object') {
+      return null;
+    }
+
+    const openCodeEvent = event as OpenCodeStreamEvent;
+
+    switch (openCodeEvent.type) {
+      case 'text-delta': {
+        const textEvent = openCodeEvent as OpenCodeTextDeltaEvent;
+
+        // Skip empty text deltas
+        if (!textEvent.text) {
+          return null;
+        }
+
+        const content: ContentBlock[] = [
+          {
+            type: 'text',
+            text: textEvent.text,
+          },
+        ];
+
+        return {
+          type: 'assistant',
+          session_id: textEvent.session_id,
+          message: {
+            role: 'assistant',
+            content,
+          },
+        };
+      }
+
+      case 'text-end': {
+        // Text end is informational - no message needed
+        return null;
+      }
+
+      case 'tool-call': {
+        const toolEvent = openCodeEvent as OpenCodeToolCallEvent;
+
+        // Generate a tool use ID if not provided
+        const toolUseId = toolEvent.call_id || generateToolUseId();
+
+        const content: ContentBlock[] = [
+          {
+            type: 'tool_use',
+            name: toolEvent.name,
+            tool_use_id: toolUseId,
+            input: toolEvent.args,
+          },
+        ];
+
+        return {
+          type: 'assistant',
+          session_id: toolEvent.session_id,
+          message: {
+            role: 'assistant',
+            content,
+          },
+        };
+      }
+
+      case 'tool-result': {
+        const resultEvent = openCodeEvent as OpenCodeToolResultEvent;
+
+        const content: ContentBlock[] = [
+          {
+            type: 'tool_result',
+            tool_use_id: resultEvent.call_id,
+            content: resultEvent.output,
+          },
+        ];
+
+        return {
+          type: 'assistant',
+          session_id: resultEvent.session_id,
+          message: {
+            role: 'assistant',
+            content,
+          },
+        };
+      }
+
+      case 'tool-error': {
+        const errorEvent = openCodeEvent as OpenCodeToolErrorEvent;
+
+        return {
+          type: 'error',
+          session_id: errorEvent.session_id,
+          error: errorEvent.error || 'Tool execution failed',
+        };
+      }
+
+      case 'start-step': {
+        // Start step is informational - no message needed
+        return null;
+      }
+
+      case 'finish-step': {
+        const finishEvent = openCodeEvent as OpenCodeFinishStepEvent;
+
+        // Check if the step failed
+        if (finishEvent.success === false || finishEvent.error) {
+          return {
+            type: 'error',
+            session_id: finishEvent.session_id,
+            error: finishEvent.error || 'Step execution failed',
+          };
+        }
+
+        // Successful completion
+        return {
+          type: 'result',
+          subtype: 'success',
+          session_id: finishEvent.session_id,
+          result: finishEvent.result,
+        };
+      }
+
+      default: {
+        // Unknown event type - skip it
+        return null;
+      }
+    }
+  }
+
+  // ==========================================================================
+  // Model Configuration
+  // ==========================================================================
+
+  /**
+   * Get available models for OpenCode
+   *
+   * Returns model definitions for supported AI providers:
+   * - Anthropic Claude models (Sonnet, Opus, Haiku)
+   * - OpenAI GPT-4o
+   * - Google Gemini 2.5 Pro
+   */
+  getAvailableModels(): ModelDefinition[] {
+    return [
+      // OpenCode Free Tier Models
+      {
+        id: 'opencode/big-pickle',
+        name: 'Big Pickle (Free)',
+        modelString: 'opencode/big-pickle',
+        provider: 'opencode',
+        description: 'OpenCode free tier model - great for general coding',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'basic',
+      },
+      {
+        id: 'opencode/gpt-5-nano',
+        name: 'GPT-5 Nano (Free)',
+        modelString: 'opencode/gpt-5-nano',
+        provider: 'opencode',
+        description: 'Fast and lightweight free tier model',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'basic',
+      },
+      {
+        id: 'opencode/grok-code',
+        name: 'Grok Code (Free)',
+        modelString: 'opencode/grok-code',
+        provider: 'opencode',
+        description: 'OpenCode free tier Grok model for coding',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'basic',
+      },
+      // Amazon Bedrock - Claude Models
+      {
+        id: 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+        name: 'Claude Sonnet 4.5 (Bedrock)',
+        modelString: 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+        provider: 'opencode',
+        description: 'Latest Claude Sonnet via AWS Bedrock - fast and intelligent',
+        supportsTools: true,
+        supportsVision: true,
+        tier: 'premium',
+        default: true,
+      },
+      {
+        id: 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+        name: 'Claude Opus 4.5 (Bedrock)',
+        modelString: 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+        provider: 'opencode',
+        description: 'Most capable Claude model via AWS Bedrock',
+        supportsTools: true,
+        supportsVision: true,
+        tier: 'premium',
+      },
+      {
+        id: 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+        name: 'Claude Haiku 4.5 (Bedrock)',
+        modelString: 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+        provider: 'opencode',
+        description: 'Fastest Claude model via AWS Bedrock',
+        supportsTools: true,
+        supportsVision: true,
+        tier: 'standard',
+      },
+      // Amazon Bedrock - DeepSeek Models
+      {
+        id: 'amazon-bedrock/deepseek.r1-v1:0',
+        name: 'DeepSeek R1 (Bedrock)',
+        modelString: 'amazon-bedrock/deepseek.r1-v1:0',
+        provider: 'opencode',
+        description: 'DeepSeek R1 reasoning model - excellent for coding',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'premium',
+      },
+      // Amazon Bedrock - Amazon Nova Models
+      {
+        id: 'amazon-bedrock/amazon.nova-pro-v1:0',
+        name: 'Amazon Nova Pro (Bedrock)',
+        modelString: 'amazon-bedrock/amazon.nova-pro-v1:0',
+        provider: 'opencode',
+        description: 'Amazon Nova Pro - balanced performance',
+        supportsTools: true,
+        supportsVision: true,
+        tier: 'standard',
+      },
+      // Amazon Bedrock - Meta Llama Models
+      {
+        id: 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0',
+        name: 'Llama 4 Maverick 17B (Bedrock)',
+        modelString: 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0',
+        provider: 'opencode',
+        description: 'Meta Llama 4 Maverick via AWS Bedrock',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'standard',
+      },
+      // Amazon Bedrock - Qwen Models
+      {
+        id: 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0',
+        name: 'Qwen3 Coder 480B (Bedrock)',
+        modelString: 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0',
+        provider: 'opencode',
+        description: 'Qwen3 Coder 480B - excellent for coding',
+        supportsTools: true,
+        supportsVision: false,
+        tier: 'premium',
+      },
+    ];
+  }
+
+  // ==========================================================================
+  // Feature Support
+  // ==========================================================================
+
+  /**
+   * Check if a feature is supported by OpenCode
+   *
+   * Supported features:
+   * - tools: Function calling / tool use
+   * - text: Text generation
+   * - vision: Image understanding
+   */
+  supportsFeature(feature: string): boolean {
+    const supportedFeatures = ['tools', 'text', 'vision'];
+    return supportedFeatures.includes(feature);
+  }
+
+  // ==========================================================================
+  // Installation Detection
+  // ==========================================================================
+
+  /**
+   * Detect OpenCode installation status
+   *
+   * Checks if the opencode CLI is available either through:
+   * - Direct installation (npm global)
+   * - NPX (fallback on Windows)
+   */
+  async detectInstallation(): Promise<InstallationStatus> {
+    this.ensureCliDetected();
+
+    const installed = await this.isInstalled();
+
+    return {
+      installed,
+      path: this.cliPath || undefined,
+      method: this.detectedStrategy === 'npx' ? 'npm' : 'cli',
+    };
+  }
+}

apps/server/src/providers/provider-factory.ts

@@ -7,7 +7,7 @@
 
 import { BaseProvider } from './base-provider.js';
 import type { InstallationStatus, ModelDefinition } from './types.js';
-import { isCursorModel, isCodexModel, type ModelProvider } from '@automaker/types';
+import { isCursorModel, isCodexModel, isOpencodeModel, type ModelProvider } from '@automaker/types';
 
 /**
  * Provider registration entry
@@ -201,6 +201,7 @@ export class ProviderFactory {
 import { ClaudeProvider } from './claude-provider.js';
 import { CursorProvider } from './cursor-provider.js';
 import { CodexProvider } from './codex-provider.js';
+import { OpencodeProvider } from './opencode-provider.js';
 
 // Register Claude provider
 registerProvider('claude', {
@@ -228,3 +229,10 @@ registerProvider('codex', {
   canHandleModel: (model: string) => isCodexModel(model),
   priority: 5, // Medium priority - check after Cursor but before Claude
 });
+
+// Register OpenCode provider
+registerProvider('opencode', {
+  factory: () => new OpencodeProvider(),
+  canHandleModel: (model: string) => isOpencodeModel(model),
+  priority: 3, // Between codex (5) and claude (0)
+});

apps/server/tests/unit/providers/provider-factory.test.ts

@@ -3,12 +3,14 @@ import { ProviderFactory } from '@/providers/provider-factory.js';
 import { ClaudeProvider } from '@/providers/claude-provider.js';
 import { CursorProvider } from '@/providers/cursor-provider.js';
 import { CodexProvider } from '@/providers/codex-provider.js';
+import { OpencodeProvider } from '@/providers/opencode-provider.js';
 
 describe('provider-factory.ts', () => {
   let consoleSpy: any;
   let detectClaudeSpy: any;
   let detectCursorSpy: any;
   let detectCodexSpy: any;
+  let detectOpencodeSpy: any;
 
   beforeEach(() => {
     consoleSpy = {
@@ -25,6 +27,9 @@ describe('provider-factory.ts', () => {
     detectCodexSpy = vi
       .spyOn(CodexProvider.prototype, 'detectInstallation')
       .mockResolvedValue({ installed: true });
+    detectOpencodeSpy = vi
+      .spyOn(OpencodeProvider.prototype, 'detectInstallation')
+      .mockResolvedValue({ installed: true });
   });
 
   afterEach(() => {
@@ -32,6 +37,7 @@ describe('provider-factory.ts', () => {
     detectClaudeSpy.mockRestore();
     detectCursorSpy.mockRestore();
     detectCodexSpy.mockRestore();
+    detectOpencodeSpy.mockRestore();
   });
 
   describe('getProviderForModel', () => {
@@ -159,9 +165,9 @@ describe('provider-factory.ts', () => {
       expect(hasClaudeProvider).toBe(true);
     });
 
-    it('should return exactly 3 providers', () => {
+    it('should return exactly 4 providers', () => {
       const providers = ProviderFactory.getAllProviders();
-      expect(providers).toHaveLength(3);
+      expect(providers).toHaveLength(4);
     });
 
     it('should include CursorProvider', () => {
@@ -198,7 +204,8 @@ describe('provider-factory.ts', () => {
       expect(keys).toContain('claude');
       expect(keys).toContain('cursor');
       expect(keys).toContain('codex');
-      expect(keys).toHaveLength(3);
+      expect(keys).toContain('opencode');
+      expect(keys).toHaveLength(4);
     });
 
     it('should include cursor status', async () => {

apps/ui/src/components/ui/provider-icon.tsx

@@ -1,4 +1,5 @@
 import type { ComponentType, SVGProps } from 'react';
+import { Cpu } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import type { AgentModel, ModelProvider } from '@automaker/types';
 import { getProviderFromModel } from '@/lib/utils';
@@ -95,6 +96,10 @@ export function GrokIcon(props: Omit<ProviderIconProps, 'provider'>) {
   return <ProviderIcon provider={PROVIDER_ICON_KEYS.grok} {...props} />;
 }
 
+export function OpenCodeIcon({ className, ...props }: { className?: string }) {
+  return <Cpu className={cn('inline-block', className)} {...props} />;
+}
+
 export const PROVIDER_ICON_COMPONENTS: Record<
   ModelProvider,
   ComponentType<{ className?: string }>
@@ -102,6 +107,7 @@ export const PROVIDER_ICON_COMPONENTS: Record<
   claude: AnthropicIcon,
   cursor: CursorIcon, // Default for Cursor provider (will be overridden by getProviderIconForModel)
   codex: OpenAIIcon,
+  opencode: OpenCodeIcon,
 };
 
 /**

apps/ui/src/components/views/settings-view.tsx

@@ -18,7 +18,12 @@ import { FeatureDefaultsSection } from './settings-view/feature-defaults/feature
 import { DangerZoneSection } from './settings-view/danger-zone/danger-zone-section';
 import { AccountSection } from './settings-view/account';
 import { SecuritySection } from './settings-view/security';
-import { ClaudeSettingsTab, CursorSettingsTab, CodexSettingsTab } from './settings-view/providers';
+import {
+  ClaudeSettingsTab,
+  CursorSettingsTab,
+  CodexSettingsTab,
+  OpencodeSettingsTab,
+} from './settings-view/providers';
 import { MCPServersSection } from './settings-view/mcp-servers';
 import { PromptCustomizationSection } from './settings-view/prompts';
 import type { Project as SettingsProject, Theme } from './settings-view/shared/types';
@@ -109,6 +114,8 @@ export function SettingsView() {
         return <CursorSettingsTab />;
       case 'codex-provider':
         return <CodexSettingsTab />;
+      case 'opencode-provider':
+        return <OpencodeSettingsTab />;
       case 'providers':
       case 'claude': // Backwards compatibility - redirect to claude-provider
         return <ClaudeSettingsTab />;

apps/ui/src/components/views/settings-view/cli-status/opencode-cli-status.tsx

@@ -0,0 +1,306 @@
+import { Button } from '@/components/ui/button';
+import { CheckCircle2, AlertCircle, RefreshCw, XCircle, Bot } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import type { CliStatus } from '../shared/types';
+
+export type OpencodeAuthMethod =
+  | 'api_key_env' // ANTHROPIC_API_KEY or other provider env vars
+  | 'api_key' // Manually stored API key
+  | 'oauth' // OAuth authentication
+  | 'config_file' // Config file with credentials
+  | 'none';
+
+export interface OpencodeAuthStatus {
+  authenticated: boolean;
+  method: OpencodeAuthMethod;
+  hasApiKey?: boolean;
+  hasEnvApiKey?: boolean;
+  hasOAuthToken?: boolean;
+  error?: string;
+}
+
+function getAuthMethodLabel(method: OpencodeAuthMethod): string {
+  switch (method) {
+    case 'api_key':
+      return 'API Key';
+    case 'api_key_env':
+      return 'API Key (Environment)';
+    case 'oauth':
+      return 'OAuth Authentication';
+    case 'config_file':
+      return 'Configuration File';
+    default:
+      return method || 'Unknown';
+  }
+}
+
+interface OpencodeCliStatusProps {
+  status: CliStatus | null;
+  authStatus?: OpencodeAuthStatus | null;
+  isChecking: boolean;
+  onRefresh: () => void;
+}
+
+function SkeletonPulse({ className }: { className?: string }) {
+  return <div className={cn('animate-pulse bg-muted/50 rounded', className)} />;
+}
+
+export function OpencodeCliStatusSkeleton() {
+  return (
+    <div
+      className={cn(
+        'rounded-2xl overflow-hidden',
+        'border border-border/50',
+        'bg-gradient-to-br from-card/90 via-card/70 to-card/80 backdrop-blur-xl',
+        'shadow-sm shadow-black/5'
+      )}
+    >
+      <div className="p-6 border-b border-border/50 bg-gradient-to-r from-transparent via-accent/5 to-transparent">
+        <div className="flex items-center justify-between mb-2">
+          <div className="flex items-center gap-3">
+            <SkeletonPulse className="w-9 h-9 rounded-xl" />
+            <SkeletonPulse className="h-6 w-36" />
+          </div>
+          <SkeletonPulse className="w-9 h-9 rounded-lg" />
+        </div>
+        <div className="ml-12">
+          <SkeletonPulse className="h-4 w-80" />
+        </div>
+      </div>
+      <div className="p-6 space-y-4">
+        {/* Installation status skeleton */}
+        <div className="flex items-center gap-3 p-4 rounded-xl border border-border/30 bg-muted/10">
+          <SkeletonPulse className="w-10 h-10 rounded-xl" />
+          <div className="flex-1 space-y-2">
+            <SkeletonPulse className="h-4 w-40" />
+            <SkeletonPulse className="h-3 w-32" />
+            <SkeletonPulse className="h-3 w-48" />
+          </div>
+        </div>
+        {/* Auth status skeleton */}
+        <div className="flex items-center gap-3 p-4 rounded-xl border border-border/30 bg-muted/10">
+          <SkeletonPulse className="w-10 h-10 rounded-xl" />
+          <div className="flex-1 space-y-2">
+            <SkeletonPulse className="h-4 w-28" />
+            <SkeletonPulse className="h-3 w-36" />
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export function OpencodeModelConfigSkeleton() {
+  return (
+    <div
+      className={cn(
+        'rounded-2xl overflow-hidden',
+        'border border-border/50',
+        'bg-gradient-to-br from-card/90 via-card/70 to-card/80 backdrop-blur-xl',
+        'shadow-sm shadow-black/5'
+      )}
+    >
+      <div className="p-6 border-b border-border/50 bg-gradient-to-r from-transparent via-accent/5 to-transparent">
+        <div className="flex items-center gap-3 mb-2">
+          <SkeletonPulse className="w-9 h-9 rounded-xl" />
+          <SkeletonPulse className="h-6 w-40" />
+        </div>
+        <div className="ml-12">
+          <SkeletonPulse className="h-4 w-72" />
+        </div>
+      </div>
+      <div className="p-6 space-y-6">
+        {/* Default Model skeleton */}
+        <div className="space-y-2">
+          <SkeletonPulse className="h-4 w-24" />
+          <SkeletonPulse className="h-10 w-full rounded-md" />
+        </div>
+        {/* Available Models skeleton */}
+        <div className="space-y-3">
+          <SkeletonPulse className="h-4 w-32" />
+          {/* Provider group skeleton */}
+          <div className="space-y-2">
+            <div className="flex items-center gap-2">
+              <SkeletonPulse className="w-4 h-4 rounded" />
+              <SkeletonPulse className="h-4 w-20" />
+            </div>
+            <div className="grid gap-2">
+              {[1, 2, 3].map((i) => (
+                <div
+                  key={i}
+                  className="flex items-center justify-between p-3 rounded-xl border border-border/30 bg-muted/10"
+                >
+                  <div className="flex items-center gap-3">
+                    <SkeletonPulse className="w-5 h-5 rounded" />
+                    <div className="space-y-1.5">
+                      <SkeletonPulse className="h-4 w-32" />
+                      <SkeletonPulse className="h-3 w-48" />
+                    </div>
+                  </div>
+                  <SkeletonPulse className="h-5 w-12 rounded-full" />
+                </div>
+              ))}
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export function OpencodeCliStatus({
+  status,
+  authStatus,
+  isChecking,
+  onRefresh,
+}: OpencodeCliStatusProps) {
+  if (!status) return <OpencodeCliStatusSkeleton />;
+
+  return (
+    <div
+      className={cn(
+        'rounded-2xl overflow-hidden',
+        'border border-border/50',
+        'bg-gradient-to-br from-card/90 via-card/70 to-card/80 backdrop-blur-xl',
+        'shadow-sm shadow-black/5'
+      )}
+    >
+      <div className="p-6 border-b border-border/50 bg-gradient-to-r from-transparent via-accent/5 to-transparent">
+        <div className="flex items-center justify-between mb-2">
+          <div className="flex items-center gap-3">
+            <div className="w-9 h-9 rounded-xl bg-gradient-to-br from-brand-500/20 to-brand-600/10 flex items-center justify-center border border-brand-500/20">
+              <Bot className="w-5 h-5 text-brand-500" />
+            </div>
+            <h2 className="text-lg font-semibold text-foreground tracking-tight">OpenCode CLI</h2>
+          </div>
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={onRefresh}
+            disabled={isChecking}
+            data-testid="refresh-opencode-cli"
+            title="Refresh OpenCode CLI detection"
+            className={cn(
+              'h-9 w-9 rounded-lg',
+              'hover:bg-accent/50 hover:scale-105',
+              'transition-all duration-200'
+            )}
+          >
+            <RefreshCw className={cn('w-4 h-4', isChecking && 'animate-spin')} />
+          </Button>
+        </div>
+        <p className="text-sm text-muted-foreground/80 ml-12">
+          OpenCode CLI provides multi-provider AI support with Claude, GPT, and Gemini models.
+        </p>
+      </div>
+      <div className="p-6 space-y-4">
+        {status.success && status.status === 'installed' ? (
+          <div className="space-y-3">
+            <div className="flex items-center gap-3 p-4 rounded-xl bg-emerald-500/10 border border-emerald-500/20">
+              <div className="w-10 h-10 rounded-xl bg-emerald-500/15 flex items-center justify-center border border-emerald-500/20 shrink-0">
+                <CheckCircle2 className="w-5 h-5 text-emerald-500" />
+              </div>
+              <div className="flex-1 min-w-0">
+                <p className="text-sm font-medium text-emerald-400">OpenCode CLI Installed</p>
+                <div className="text-xs text-emerald-400/70 mt-1.5 space-y-0.5">
+                  {status.method && (
+                    <p>
+                      Method: <span className="font-mono">{status.method}</span>
+                    </p>
+                  )}
+                  {status.version && (
+                    <p>
+                      Version: <span className="font-mono">{status.version}</span>
+                    </p>
+                  )}
+                  {status.path && (
+                    <p className="truncate" title={status.path}>
+                      Path: <span className="font-mono text-[10px]">{status.path}</span>
+                    </p>
+                  )}
+                </div>
+              </div>
+            </div>
+
+            {/* Authentication Status */}
+            {authStatus?.authenticated ? (
+              <div className="flex items-center gap-3 p-4 rounded-xl bg-emerald-500/10 border border-emerald-500/20">
+                <div className="w-10 h-10 rounded-xl bg-emerald-500/15 flex items-center justify-center border border-emerald-500/20 shrink-0">
+                  <CheckCircle2 className="w-5 h-5 text-emerald-500" />
+                </div>
+                <div className="flex-1 min-w-0">
+                  <p className="text-sm font-medium text-emerald-400">Authenticated</p>
+                  <div className="text-xs text-emerald-400/70 mt-1.5">
+                    <p>
+                      Method:{' '}
+                      <span className="font-mono">{getAuthMethodLabel(authStatus.method)}</span>
+                    </p>
+                  </div>
+                </div>
+              </div>
+            ) : (
+              <div className="flex items-start gap-3 p-4 rounded-xl bg-amber-500/10 border border-amber-500/20">
+                <div className="w-10 h-10 rounded-xl bg-amber-500/15 flex items-center justify-center border border-amber-500/20 shrink-0 mt-0.5">
+                  <XCircle className="w-5 h-5 text-amber-500" />
+                </div>
+                <div className="flex-1">
+                  <p className="text-sm font-medium text-amber-400">Not Authenticated</p>
+                  <p className="text-xs text-amber-400/70 mt-1">
+                    Run{' '}
+                    <code className="font-mono bg-amber-500/10 px-1 rounded">opencode auth</code> or
+                    set an API key to authenticate.
+                  </p>
+                </div>
+              </div>
+            )}
+
+            {status.recommendation && (
+              <p className="text-xs text-muted-foreground/70 ml-1">{status.recommendation}</p>
+            )}
+          </div>
+        ) : (
+          <div className="space-y-4">
+            <div className="flex items-start gap-3 p-4 rounded-xl bg-amber-500/10 border border-amber-500/20">
+              <div className="w-10 h-10 rounded-xl bg-amber-500/15 flex items-center justify-center border border-amber-500/20 shrink-0 mt-0.5">
+                <AlertCircle className="w-5 h-5 text-amber-500" />
+              </div>
+              <div className="flex-1">
+                <p className="text-sm font-medium text-amber-400">OpenCode CLI Not Detected</p>
+                <p className="text-xs text-amber-400/70 mt-1">
+                  {status.recommendation || 'Install OpenCode CLI to use multi-provider AI models.'}
+                </p>
+              </div>
+            </div>
+            {status.installCommands && (
+              <div className="space-y-3">
+                <p className="text-xs font-medium text-foreground/80">Installation Commands:</p>
+                <div className="space-y-2">
+                  {status.installCommands.npm && (
+                    <div className="p-3 rounded-xl bg-accent/30 border border-border/50">
+                      <p className="text-[10px] text-muted-foreground mb-1.5 font-medium uppercase tracking-wider">
+                        npm
+                      </p>
+                      <code className="text-xs text-foreground/80 font-mono break-all">
+                        {status.installCommands.npm}
+                      </code>
+                    </div>
+                  )}
+                  {status.installCommands.macos && (
+                    <div className="p-3 rounded-xl bg-accent/30 border border-border/50">
+                      <p className="text-[10px] text-muted-foreground mb-1.5 font-medium uppercase tracking-wider">
+                        macOS/Linux
+                      </p>
+                      <code className="text-xs text-foreground/80 font-mono break-all">
+                        {status.installCommands.macos}
+                      </code>
+                    </div>
+                  )}
+                </div>
+              </div>
+            )}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

apps/ui/src/components/views/settings-view/config/navigation.ts

@@ -14,6 +14,7 @@ import {
   MessageSquareText,
   User,
   Shield,
+  Cpu,
 } from 'lucide-react';
 import { AnthropicIcon, CursorIcon, OpenAIIcon } from '@/components/ui/provider-icon';
 import type { SettingsViewId } from '../hooks/use-settings-view';
@@ -41,6 +42,7 @@ export const GLOBAL_NAV_ITEMS: NavigationItem[] = [
       { id: 'claude-provider', label: 'Claude', icon: AnthropicIcon },
       { id: 'cursor-provider', label: 'Cursor', icon: CursorIcon },
       { id: 'codex-provider', label: 'Codex', icon: OpenAIIcon },
+      { id: 'opencode-provider', label: 'OpenCode', icon: Cpu },
     ],
   },
   { id: 'mcp-servers', label: 'MCP Servers', icon: Plug },

apps/ui/src/components/views/settings-view/hooks/use-settings-view.ts

@@ -7,6 +7,7 @@ export type SettingsViewId =
   | 'claude-provider'
   | 'cursor-provider'
   | 'codex-provider'
+  | 'opencode-provider'
   | 'mcp-servers'
   | 'prompts'
   | 'model-defaults'

apps/ui/src/components/views/settings-view/providers/codex-model-configuration.tsx

@@ -8,10 +8,8 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select';
-import { Cpu } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import type { CodexModelId } from '@automaker/types';
-import { CODEX_MODEL_MAP } from '@automaker/types';
 import { OpenAIIcon } from '@/components/ui/provider-icon';
 
 interface CodexModelConfigurationProps {
@@ -165,18 +163,6 @@ export function CodexModelConfiguration({
   );
 }
 
-function getModelDisplayName(modelId: string): string {
-  const displayNames: Record<string, string> = {
-    'gpt-5.2-codex': 'GPT-5.2-Codex',
-    'gpt-5-codex': 'GPT-5-Codex',
-    'gpt-5-codex-mini': 'GPT-5-Codex-Mini',
-    'codex-1': 'Codex-1',
-    'codex-mini-latest': 'Codex-Mini-Latest',
-    'gpt-5': 'GPT-5',
-  };
-  return displayNames[modelId] || modelId;
-}
-
 function supportsReasoningEffort(modelId: string): boolean {
   const reasoningModels = ['gpt-5.2-codex', 'gpt-5-codex', 'gpt-5', 'codex-1'];
   return reasoningModels.includes(modelId);

apps/ui/src/components/views/settings-view/providers/index.ts

@@ -2,3 +2,4 @@ export { ProviderTabs } from './provider-tabs';
 export { ClaudeSettingsTab } from './claude-settings-tab';
 export { CursorSettingsTab } from './cursor-settings-tab';
 export { CodexSettingsTab } from './codex-settings-tab';
+export { OpencodeSettingsTab } from './opencode-settings-tab';

apps/ui/src/components/views/settings-view/providers/opencode-model-configuration.tsx

@@ -0,0 +1,231 @@
+import { Label } from '@/components/ui/label';
+import { Badge } from '@/components/ui/badge';
+import { Checkbox } from '@/components/ui/checkbox';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { Terminal, Cloud, Cpu, Brain, Sparkles, Zap } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import type { OpencodeModelId, OpencodeProvider, OpencodeModelConfig } from '@automaker/types';
+import { OPENCODE_MODELS, OPENCODE_MODEL_CONFIG_MAP } from '@automaker/types';
+import { AnthropicIcon } from '@/components/ui/provider-icon';
+import type { ComponentType } from 'react';
+
+interface OpencodeModelConfigurationProps {
+  enabledOpencodeModels: OpencodeModelId[];
+  opencodeDefaultModel: OpencodeModelId;
+  isSaving: boolean;
+  onDefaultModelChange: (model: OpencodeModelId) => void;
+  onModelToggle: (model: OpencodeModelId, enabled: boolean) => void;
+}
+
+/**
+ * Returns the appropriate icon component for a given OpenCode provider
+ */
+function getProviderIcon(provider: OpencodeProvider): ComponentType<{ className?: string }> {
+  switch (provider) {
+    case 'opencode':
+      return Terminal;
+    case 'amazon-bedrock-anthropic':
+      return AnthropicIcon;
+    case 'amazon-bedrock-deepseek':
+      return Brain;
+    case 'amazon-bedrock-amazon':
+      return Cloud;
+    case 'amazon-bedrock-meta':
+      return Cpu;
+    case 'amazon-bedrock-mistral':
+      return Sparkles;
+    case 'amazon-bedrock-qwen':
+      return Zap;
+    default:
+      return Terminal;
+  }
+}
+
+/**
+ * Returns a formatted provider label for display
+ */
+function getProviderLabel(provider: OpencodeProvider): string {
+  switch (provider) {
+    case 'opencode':
+      return 'OpenCode (Free)';
+    case 'amazon-bedrock-anthropic':
+      return 'Claude (Bedrock)';
+    case 'amazon-bedrock-deepseek':
+      return 'DeepSeek (Bedrock)';
+    case 'amazon-bedrock-amazon':
+      return 'Amazon Nova (Bedrock)';
+    case 'amazon-bedrock-meta':
+      return 'Meta Llama (Bedrock)';
+    case 'amazon-bedrock-mistral':
+      return 'Mistral (Bedrock)';
+    case 'amazon-bedrock-qwen':
+      return 'Qwen (Bedrock)';
+    default:
+      return provider;
+  }
+}
+
+export function OpencodeModelConfiguration({
+  enabledOpencodeModels,
+  opencodeDefaultModel,
+  isSaving,
+  onDefaultModelChange,
+  onModelToggle,
+}: OpencodeModelConfigurationProps) {
+  // Group models by provider for organized display
+  const modelsByProvider = OPENCODE_MODELS.reduce(
+    (acc, model) => {
+      if (!acc[model.provider]) {
+        acc[model.provider] = [];
+      }
+      acc[model.provider].push(model);
+      return acc;
+    },
+    {} as Record<OpencodeProvider, OpencodeModelConfig[]>
+  );
+
+  // Order: Free tier first, then Claude, then others
+  const providerOrder: OpencodeProvider[] = [
+    'opencode',
+    'amazon-bedrock-anthropic',
+    'amazon-bedrock-deepseek',
+    'amazon-bedrock-amazon',
+    'amazon-bedrock-meta',
+    'amazon-bedrock-mistral',
+    'amazon-bedrock-qwen',
+  ];
+
+  return (
+    <div
+      className={cn(
+        'rounded-2xl overflow-hidden',
+        'border border-border/50',
+        'bg-gradient-to-br from-card/90 via-card/70 to-card/80 backdrop-blur-xl',
+        'shadow-sm shadow-black/5'
+      )}
+    >
+      <div className="p-6 border-b border-border/50 bg-gradient-to-r from-transparent via-accent/5 to-transparent">
+        <div className="flex items-center gap-3 mb-2">
+          <div className="w-9 h-9 rounded-xl bg-gradient-to-br from-brand-500/20 to-brand-600/10 flex items-center justify-center border border-brand-500/20">
+            <Terminal className="w-5 h-5 text-brand-500" />
+          </div>
+          <h2 className="text-lg font-semibold text-foreground tracking-tight">
+            Model Configuration
+          </h2>
+        </div>
+        <p className="text-sm text-muted-foreground/80 ml-12">
+          Configure which OpenCode models are available in the feature modal
+        </p>
+      </div>
+      <div className="p-6 space-y-6">
+        {/* Default Model Selection */}
+        <div className="space-y-2">
+          <Label>Default Model</Label>
+          <Select
+            value={opencodeDefaultModel}
+            onValueChange={(v) => onDefaultModelChange(v as OpencodeModelId)}
+            disabled={isSaving}
+          >
+            <SelectTrigger className="w-full">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              {enabledOpencodeModels.map((modelId) => {
+                const model = OPENCODE_MODEL_CONFIG_MAP[modelId];
+                if (!model) return null;
+                const ProviderIconComponent = getProviderIcon(model.provider);
+                return (
+                  <SelectItem key={modelId} value={modelId}>
+                    <div className="flex items-center gap-2">
+                      <ProviderIconComponent className="w-4 h-4" />
+                      <span>{model.label}</span>
+                    </div>
+                  </SelectItem>
+                );
+              })}
+            </SelectContent>
+          </Select>
+        </div>
+
+        {/* Available Models grouped by provider */}
+        <div className="space-y-4">
+          <Label>Available Models</Label>
+          {providerOrder.map((provider) => {
+            const models = modelsByProvider[provider];
+            if (!models || models.length === 0) return null;
+
+            const ProviderIconComponent = getProviderIcon(provider);
+
+            return (
+              <div key={provider} className="space-y-2">
+                <div className="flex items-center gap-2 text-sm text-muted-foreground">
+                  <ProviderIconComponent className="w-4 h-4" />
+                  <span className="font-medium">{getProviderLabel(provider)}</span>
+                  {provider === 'opencode' && (
+                    <Badge
+                      variant="outline"
+                      className="text-xs bg-green-500/10 text-green-500 border-green-500/30"
+                    >
+                      Free
+                    </Badge>
+                  )}
+                </div>
+                <div className="grid gap-2">
+                  {models.map((model) => {
+                    const isEnabled = enabledOpencodeModels.includes(model.id);
+                    const isDefault = model.id === opencodeDefaultModel;
+
+                    return (
+                      <div
+                        key={model.id}
+                        className="flex items-center justify-between p-3 rounded-xl border border-border/50 bg-card/50 hover:bg-accent/30 transition-colors"
+                      >
+                        <div className="flex items-center gap-3">
+                          <Checkbox
+                            checked={isEnabled}
+                            onCheckedChange={(checked) => onModelToggle(model.id, !!checked)}
+                            disabled={isSaving || isDefault}
+                          />
+                          <div>
+                            <div className="flex items-center gap-2">
+                              <span className="text-sm font-medium">{model.label}</span>
+                              {model.supportsVision && (
+                                <Badge variant="outline" className="text-xs">
+                                  Vision
+                                </Badge>
+                              )}
+                              {model.tier === 'free' && (
+                                <Badge
+                                  variant="outline"
+                                  className="text-xs bg-green-500/10 text-green-500 border-green-500/30"
+                                >
+                                  Free
+                                </Badge>
+                              )}
+                              {isDefault && (
+                                <Badge variant="secondary" className="text-xs">
+                                  Default
+                                </Badge>
+                              )}
+                            </div>
+                            <p className="text-xs text-muted-foreground">{model.description}</p>
+                          </div>
+                        </div>
+                      </div>
+                    );
+                  })}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      </div>
+    </div>
+  );
+}

apps/ui/src/components/views/settings-view/providers/opencode-settings-tab.tsx

@@ -0,0 +1,180 @@
+import { useState, useCallback, useEffect } from 'react';
+import { toast } from 'sonner';
+import { useAppStore } from '@/store/app-store';
+import {
+  OpencodeCliStatus,
+  OpencodeCliStatusSkeleton,
+  OpencodeModelConfigSkeleton,
+} from '../cli-status/opencode-cli-status';
+import { OpencodeModelConfiguration } from './opencode-model-configuration';
+import { getElectronAPI } from '@/lib/electron';
+import { createLogger } from '@automaker/utils/logger';
+import type { CliStatus as SharedCliStatus } from '../shared/types';
+import type { OpencodeModelId } from '@automaker/types';
+import type { OpencodeAuthStatus } from '../cli-status/opencode-cli-status';
+
+const logger = createLogger('OpencodeSettings');
+
+export function OpencodeSettingsTab() {
+  const {
+    enabledOpencodeModels,
+    opencodeDefaultModel,
+    setOpencodeDefaultModel,
+    toggleOpencodeModel,
+  } = useAppStore();
+
+  const [isCheckingOpencodeCli, setIsCheckingOpencodeCli] = useState(false);
+  const [isInitialLoading, setIsInitialLoading] = useState(true);
+  const [cliStatus, setCliStatus] = useState<SharedCliStatus | null>(null);
+  const [authStatus, setAuthStatus] = useState<OpencodeAuthStatus | null>(null);
+  const [isSaving, setIsSaving] = useState(false);
+
+  // Load OpenCode CLI status on mount
+  useEffect(() => {
+    const checkOpencodeStatus = async () => {
+      setIsCheckingOpencodeCli(true);
+      try {
+        const api = getElectronAPI();
+        if (api?.setup?.getOpencodeStatus) {
+          const result = await api.setup.getOpencodeStatus();
+          setCliStatus({
+            success: result.success,
+            status: result.installed ? 'installed' : 'not_installed',
+            method: result.auth?.method,
+            version: result.version,
+            path: result.path,
+            recommendation: result.recommendation,
+            installCommands: result.installCommands,
+          });
+          // Set auth status if available
+          if (result.auth) {
+            setAuthStatus({
+              authenticated: result.auth.authenticated,
+              method: (result.auth.method as OpencodeAuthStatus['method']) || 'none',
+              hasApiKey: result.auth.hasApiKey,
+              hasEnvApiKey: result.auth.hasEnvApiKey,
+              hasOAuthToken: result.auth.hasOAuthToken,
+            });
+          }
+        } else {
+          // Fallback for web mode or when API is not available
+          setCliStatus({
+            success: false,
+            status: 'not_installed',
+            recommendation: 'OpenCode CLI detection is only available in desktop mode.',
+          });
+        }
+      } catch (error) {
+        logger.error('Failed to check OpenCode CLI status:', error);
+        setCliStatus({
+          success: false,
+          status: 'not_installed',
+          error: error instanceof Error ? error.message : 'Unknown error',
+        });
+      } finally {
+        setIsCheckingOpencodeCli(false);
+        setIsInitialLoading(false);
+      }
+    };
+    checkOpencodeStatus();
+  }, []);
+
+  const handleRefreshOpencodeCli = useCallback(async () => {
+    setIsCheckingOpencodeCli(true);
+    try {
+      const api = getElectronAPI();
+      if (api?.setup?.getOpencodeStatus) {
+        const result = await api.setup.getOpencodeStatus();
+        setCliStatus({
+          success: result.success,
+          status: result.installed ? 'installed' : 'not_installed',
+          method: result.auth?.method,
+          version: result.version,
+          path: result.path,
+          recommendation: result.recommendation,
+          installCommands: result.installCommands,
+        });
+        // Update auth status if available
+        if (result.auth) {
+          setAuthStatus({
+            authenticated: result.auth.authenticated,
+            method: (result.auth.method as OpencodeAuthStatus['method']) || 'none',
+            hasApiKey: result.auth.hasApiKey,
+            hasEnvApiKey: result.auth.hasEnvApiKey,
+            hasOAuthToken: result.auth.hasOAuthToken,
+          });
+        }
+      }
+    } catch (error) {
+      logger.error('Failed to refresh OpenCode CLI status:', error);
+      toast.error('Failed to refresh OpenCode CLI status');
+    } finally {
+      setIsCheckingOpencodeCli(false);
+    }
+  }, []);
+
+  const handleDefaultModelChange = useCallback(
+    (model: OpencodeModelId) => {
+      setIsSaving(true);
+      try {
+        setOpencodeDefaultModel(model);
+        toast.success('Default model updated');
+      } catch (error) {
+        toast.error('Failed to update default model');
+      } finally {
+        setIsSaving(false);
+      }
+    },
+    [setOpencodeDefaultModel]
+  );
+
+  const handleModelToggle = useCallback(
+    (model: OpencodeModelId, enabled: boolean) => {
+      setIsSaving(true);
+      try {
+        toggleOpencodeModel(model, enabled);
+      } catch (error) {
+        toast.error('Failed to update models');
+      } finally {
+        setIsSaving(false);
+      }
+    },
+    [toggleOpencodeModel]
+  );
+
+  // Show loading skeleton during initial load
+  if (isInitialLoading) {
+    return (
+      <div className="space-y-6">
+        <OpencodeCliStatusSkeleton />
+        <OpencodeModelConfigSkeleton />
+      </div>
+    );
+  }
+
+  const isCliInstalled = cliStatus?.success && cliStatus?.status === 'installed';
+
+  return (
+    <div className="space-y-6">
+      <OpencodeCliStatus
+        status={cliStatus}
+        authStatus={authStatus}
+        isChecking={isCheckingOpencodeCli}
+        onRefresh={handleRefreshOpencodeCli}
+      />
+
+      {/* Model Configuration - Only show when CLI is installed */}
+      {isCliInstalled && (
+        <OpencodeModelConfiguration
+          enabledOpencodeModels={enabledOpencodeModels}
+          opencodeDefaultModel={opencodeDefaultModel}
+          isSaving={isSaving}
+          onDefaultModelChange={handleDefaultModelChange}
+          onModelToggle={handleModelToggle}
+        />
+      )}
+    </div>
+  );
+}
+
+export default OpencodeSettingsTab;

apps/ui/src/components/views/settings-view/providers/provider-tabs.tsx

@@ -1,18 +1,20 @@
 import React from 'react';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { AnthropicIcon, CursorIcon, OpenAIIcon } from '@/components/ui/provider-icon';
+import { Cpu } from 'lucide-react';
 import { CursorSettingsTab } from './cursor-settings-tab';
 import { ClaudeSettingsTab } from './claude-settings-tab';
 import { CodexSettingsTab } from './codex-settings-tab';
+import { OpencodeSettingsTab } from './opencode-settings-tab';
 
 interface ProviderTabsProps {
-  defaultTab?: 'claude' | 'cursor' | 'codex';
+  defaultTab?: 'claude' | 'cursor' | 'codex' | 'opencode';
 }
 
 export function ProviderTabs({ defaultTab = 'claude' }: ProviderTabsProps) {
   return (
     <Tabs defaultValue={defaultTab} className="w-full">
-      <TabsList className="grid w-full grid-cols-3 mb-6">
+      <TabsList className="grid w-full grid-cols-4 mb-6">
         <TabsTrigger value="claude" className="flex items-center gap-2">
           <AnthropicIcon className="w-4 h-4" />
           Claude
@@ -25,6 +27,10 @@ export function ProviderTabs({ defaultTab = 'claude' }: ProviderTabsProps) {
           <OpenAIIcon className="w-4 h-4" />
           Codex
         </TabsTrigger>
+        <TabsTrigger value="opencode" className="flex items-center gap-2">
+          <Cpu className="w-4 h-4" />
+          OpenCode
+        </TabsTrigger>
       </TabsList>
 
       <TabsContent value="claude">
@@ -38,6 +44,10 @@ export function ProviderTabs({ defaultTab = 'claude' }: ProviderTabsProps) {
       <TabsContent value="codex">
         <CodexSettingsTab />
       </TabsContent>
+
+      <TabsContent value="opencode">
+        <OpencodeSettingsTab />
+      </TabsContent>
     </Tabs>
   );
 }

apps/ui/src/components/views/setup-view.tsx

@@ -8,6 +8,7 @@ import {
   ClaudeSetupStep,
   CursorSetupStep,
   CodexSetupStep,
+  OpencodeSetupStep,
   GitHubSetupStep,
 } from './setup-view/steps';
 import { useNavigate } from '@tanstack/react-router';
@@ -19,7 +20,16 @@ export function SetupView() {
   const { currentStep, setCurrentStep, completeSetup, setSkipClaudeSetup } = useSetupStore();
   const navigate = useNavigate();
 
-  const steps = ['welcome', 'theme', 'claude', 'cursor', 'codex', 'github', 'complete'] as const;
+  const steps = [
+    'welcome',
+    'theme',
+    'claude',
+    'cursor',
+    'codex',
+    'opencode',
+    'github',
+    'complete',
+  ] as const;
   type StepName = (typeof steps)[number];
   const getStepName = (): StepName => {
     if (currentStep === 'claude_detect' || currentStep === 'claude_auth') return 'claude';
@@ -27,6 +37,7 @@ export function SetupView() {
     if (currentStep === 'theme') return 'theme';
     if (currentStep === 'cursor') return 'cursor';
     if (currentStep === 'codex') return 'codex';
+    if (currentStep === 'opencode') return 'opencode';
     if (currentStep === 'github') return 'github';
     return 'complete';
   };
@@ -52,6 +63,10 @@ export function SetupView() {
         setCurrentStep('codex');
         break;
       case 'codex':
+        logger.debug('[Setup Flow] Moving to opencode step');
+        setCurrentStep('opencode');
+        break;
+      case 'opencode':
         logger.debug('[Setup Flow] Moving to github step');
         setCurrentStep('github');
         break;
@@ -77,9 +92,12 @@ export function SetupView() {
       case 'codex':
         setCurrentStep('cursor');
         break;
-      case 'github':
+      case 'opencode':
         setCurrentStep('codex');
         break;
+      case 'github':
+        setCurrentStep('opencode');
+        break;
     }
   };
 
@@ -96,6 +114,11 @@ export function SetupView() {
 
   const handleSkipCodex = () => {
     logger.debug('[Setup Flow] Skipping Codex setup');
+    setCurrentStep('opencode');
+  };
+
+  const handleSkipOpencode = () => {
+    logger.debug('[Setup Flow] Skipping OpenCode setup');
     setCurrentStep('github');
   };
 
@@ -161,6 +184,14 @@ export function SetupView() {
               />
             )}
 
+            {currentStep === 'opencode' && (
+              <OpencodeSetupStep
+                onNext={() => handleNext('opencode')}
+                onBack={() => handleBack('opencode')}
+                onSkip={handleSkipOpencode}
+              />
+            )}
+
             {currentStep === 'github' && (
               <GitHubSetupStep
                 onNext={() => handleNext('github')}

apps/ui/src/components/views/setup-view/steps/index.ts

@@ -5,4 +5,5 @@ export { CompleteStep } from './complete-step';
 export { ClaudeSetupStep } from './claude-setup-step';
 export { CursorSetupStep } from './cursor-setup-step';
 export { CodexSetupStep } from './codex-setup-step';
+export { OpencodeSetupStep } from './opencode-setup-step';
 export { GitHubSetupStep } from './github-setup-step';

apps/ui/src/components/views/setup-view/steps/opencode-setup-step.tsx

@@ -0,0 +1,369 @@
+import { useState, useEffect, useCallback, useRef } from 'react';
+import { createLogger } from '@automaker/utils/logger';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { useSetupStore } from '@/store/setup-store';
+import { getElectronAPI } from '@/lib/electron';
+import {
+  CheckCircle2,
+  Loader2,
+  ArrowRight,
+  ArrowLeft,
+  ExternalLink,
+  Copy,
+  RefreshCw,
+  AlertTriangle,
+  XCircle,
+  Terminal,
+} from 'lucide-react';
+import { toast } from 'sonner';
+import { StatusBadge } from '../components';
+
+const logger = createLogger('OpencodeSetupStep');
+
+interface OpencodeSetupStepProps {
+  onNext: () => void;
+  onBack: () => void;
+  onSkip: () => void;
+}
+
+interface OpencodeCliStatus {
+  installed: boolean;
+  version?: string | null;
+  path?: string | null;
+  auth?: {
+    authenticated: boolean;
+    method: string;
+  };
+  installCommand?: string;
+  loginCommand?: string;
+}
+
+export function OpencodeSetupStep({ onNext, onBack, onSkip }: OpencodeSetupStepProps) {
+  const { opencodeCliStatus, setOpencodeCliStatus } = useSetupStore();
+  const [isChecking, setIsChecking] = useState(false);
+  const [isLoggingIn, setIsLoggingIn] = useState(false);
+  const pollIntervalRef = useRef<NodeJS.Timeout | null>(null);
+
+  const checkStatus = useCallback(async () => {
+    setIsChecking(true);
+    try {
+      const api = getElectronAPI();
+      if (!api.setup?.getOpencodeStatus) {
+        return;
+      }
+      const result = await api.setup.getOpencodeStatus();
+      if (result.success) {
+        const status: OpencodeCliStatus = {
+          installed: result.installed ?? false,
+          version: result.version,
+          path: result.path,
+          auth: result.auth,
+          installCommand: result.installCommand,
+          loginCommand: result.loginCommand,
+        };
+        setOpencodeCliStatus(status);
+
+        if (result.auth?.authenticated) {
+          toast.success('OpenCode CLI is ready!');
+        }
+      }
+    } catch (error) {
+      logger.error('Failed to check OpenCode status:', error);
+    } finally {
+      setIsChecking(false);
+    }
+  }, [setOpencodeCliStatus]);
+
+  useEffect(() => {
+    checkStatus();
+    // Cleanup polling on unmount
+    return () => {
+      if (pollIntervalRef.current) {
+        clearInterval(pollIntervalRef.current);
+      }
+    };
+  }, [checkStatus]);
+
+  const copyCommand = (command: string) => {
+    navigator.clipboard.writeText(command);
+    toast.success('Command copied to clipboard');
+  };
+
+  const handleLogin = async () => {
+    setIsLoggingIn(true);
+
+    try {
+      // Copy login command to clipboard and show instructions
+      const loginCommand = opencodeCliStatus?.loginCommand || 'opencode login';
+      await navigator.clipboard.writeText(loginCommand);
+      toast.info('Login command copied! Paste in terminal to authenticate.');
+
+      // Poll for auth status
+      let attempts = 0;
+      const maxAttempts = 60; // 2 minutes with 2s interval
+
+      pollIntervalRef.current = setInterval(async () => {
+        attempts++;
+
+        try {
+          const api = getElectronAPI();
+          if (!api.setup?.getOpencodeStatus) {
+            return;
+          }
+          const result = await api.setup.getOpencodeStatus();
+
+          if (result.auth?.authenticated) {
+            if (pollIntervalRef.current) {
+              clearInterval(pollIntervalRef.current);
+              pollIntervalRef.current = null;
+            }
+            setOpencodeCliStatus({
+              ...opencodeCliStatus,
+              installed: result.installed ?? true,
+              version: result.version,
+              path: result.path,
+              auth: result.auth,
+            } as OpencodeCliStatus);
+            setIsLoggingIn(false);
+            toast.success('Successfully logged in to OpenCode!');
+          }
+        } catch {
+          // Ignore polling errors
+        }
+
+        if (attempts >= maxAttempts) {
+          if (pollIntervalRef.current) {
+            clearInterval(pollIntervalRef.current);
+            pollIntervalRef.current = null;
+          }
+          setIsLoggingIn(false);
+          toast.error('Login timed out. Please try again.');
+        }
+      }, 2000);
+    } catch (error) {
+      logger.error('Login failed:', error);
+      toast.error('Failed to start login process');
+      setIsLoggingIn(false);
+    }
+  };
+
+  const isReady = opencodeCliStatus?.installed && opencodeCliStatus?.auth?.authenticated;
+
+  const getStatusBadge = () => {
+    if (isChecking) {
+      return <StatusBadge status="checking" label="Checking..." />;
+    }
+    if (opencodeCliStatus?.auth?.authenticated) {
+      return <StatusBadge status="authenticated" label="Ready" />;
+    }
+    if (opencodeCliStatus?.installed) {
+      return <StatusBadge status="unverified" label="Not Logged In" />;
+    }
+    return <StatusBadge status="not_installed" label="Not Installed" />;
+  };
+
+  return (
+    <div className="space-y-6">
+      <div className="text-center mb-8">
+        <div className="w-16 h-16 rounded-xl bg-green-500/10 flex items-center justify-center mx-auto mb-4">
+          <Terminal className="w-8 h-8 text-green-500" />
+        </div>
+        <h2 className="text-2xl font-bold text-foreground mb-2">OpenCode CLI Setup</h2>
+        <p className="text-muted-foreground">Optional - Use OpenCode as an AI provider</p>
+      </div>
+
+      {/* Info Banner */}
+      <Card className="bg-green-500/10 border-green-500/20">
+        <CardContent className="pt-4">
+          <div className="flex items-start gap-3">
+            <AlertTriangle className="w-5 h-5 text-green-500 shrink-0 mt-0.5" />
+            <div>
+              <p className="font-medium text-foreground">This step is optional</p>
+              <p className="text-sm text-muted-foreground mt-1">
+                Configure OpenCode CLI for access to free tier models and AWS Bedrock models. You
+                can skip this and use other providers, or configure it later in Settings.
+              </p>
+            </div>
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* Status Card */}
+      <Card className="bg-card border-border">
+        <CardHeader>
+          <div className="flex items-center justify-between">
+            <CardTitle className="text-lg flex items-center gap-2">
+              <Terminal className="w-5 h-5" />
+              OpenCode CLI Status
+              <Badge variant="outline" className="ml-2">
+                Optional
+              </Badge>
+            </CardTitle>
+            <div className="flex items-center gap-2">
+              {getStatusBadge()}
+              <Button variant="ghost" size="sm" onClick={checkStatus} disabled={isChecking}>
+                <RefreshCw className={`w-4 h-4 ${isChecking ? 'animate-spin' : ''}`} />
+              </Button>
+            </div>
+          </div>
+          <CardDescription>
+            {opencodeCliStatus?.installed
+              ? opencodeCliStatus.auth?.authenticated
+                ? `Authenticated via ${opencodeCliStatus.auth.method === 'api_key' ? 'API Key' : 'Browser Login'}${opencodeCliStatus.version ? ` (v${opencodeCliStatus.version})` : ''}`
+                : 'Installed but not authenticated'
+              : 'Not installed on your system'}
+          </CardDescription>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {/* Success State */}
+          {isReady && (
+            <div className="flex items-center gap-3 p-4 rounded-lg bg-green-500/10 border border-green-500/20">
+              <CheckCircle2 className="w-5 h-5 text-green-500" />
+              <div>
+                <p className="font-medium text-foreground">OpenCode CLI is ready!</p>
+                <p className="text-sm text-muted-foreground">
+                  You can use OpenCode models for AI tasks.
+                  {opencodeCliStatus?.version && (
+                    <span className="ml-1">Version: {opencodeCliStatus.version}</span>
+                  )}
+                </p>
+              </div>
+            </div>
+          )}
+
+          {/* Not Installed */}
+          {!opencodeCliStatus?.installed && !isChecking && (
+            <div className="space-y-4">
+              <div className="flex items-start gap-3 p-4 rounded-lg bg-muted/30 border border-border">
+                <XCircle className="w-5 h-5 text-muted-foreground shrink-0 mt-0.5" />
+                <div className="flex-1">
+                  <p className="font-medium text-foreground">OpenCode CLI not found</p>
+                  <p className="text-sm text-muted-foreground mt-1">
+                    Install the OpenCode CLI to use free tier and AWS Bedrock models.
+                  </p>
+                </div>
+              </div>
+
+              <div className="space-y-3 p-4 rounded-lg bg-muted/30 border border-border">
+                <p className="font-medium text-foreground text-sm">Install OpenCode CLI:</p>
+                <div className="flex items-center gap-2">
+                  <code className="flex-1 bg-muted px-3 py-2 rounded text-sm font-mono text-foreground overflow-x-auto">
+                    {opencodeCliStatus?.installCommand || 'npm install -g opencode'}
+                  </code>
+                  <Button
+                    variant="ghost"
+                    size="icon"
+                    onClick={() =>
+                      copyCommand(opencodeCliStatus?.installCommand || 'npm install -g opencode')
+                    }
+                  >
+                    <Copy className="w-4 h-4" />
+                  </Button>
+                </div>
+                <a
+                  href="https://github.com/opencode-ai/opencode"
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  className="inline-flex items-center text-sm text-brand-500 hover:underline mt-2"
+                >
+                  View installation docs
+                  <ExternalLink className="w-3 h-3 ml-1" />
+                </a>
+              </div>
+            </div>
+          )}
+
+          {/* Installed but not authenticated */}
+          {opencodeCliStatus?.installed &&
+            !opencodeCliStatus?.auth?.authenticated &&
+            !isChecking && (
+              <div className="space-y-4">
+                <div className="flex items-start gap-3 p-4 rounded-lg bg-amber-500/10 border border-amber-500/20">
+                  <AlertTriangle className="w-5 h-5 text-amber-500 shrink-0 mt-0.5" />
+                  <div className="flex-1">
+                    <p className="font-medium text-foreground">OpenCode CLI not authenticated</p>
+                    <p className="text-sm text-muted-foreground mt-1">
+                      Run the login command to authenticate with OpenCode.
+                    </p>
+                  </div>
+                </div>
+
+                <div className="space-y-3 p-4 rounded-lg bg-muted/30 border border-border">
+                  <p className="text-sm text-muted-foreground">
+                    Run the login command in your terminal, then complete authentication in your
+                    browser:
+                  </p>
+                  <div className="flex items-center gap-2">
+                    <code className="flex-1 bg-muted px-3 py-2 rounded text-sm font-mono text-foreground">
+                      {opencodeCliStatus?.loginCommand || 'opencode login'}
+                    </code>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      onClick={() =>
+                        copyCommand(opencodeCliStatus?.loginCommand || 'opencode login')
+                      }
+                    >
+                      <Copy className="w-4 h-4" />
+                    </Button>
+                  </div>
+                  <Button
+                    onClick={handleLogin}
+                    disabled={isLoggingIn}
+                    className="w-full bg-brand-500 hover:bg-brand-600 text-white"
+                  >
+                    {isLoggingIn ? (
+                      <>
+                        <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                        Waiting for login...
+                      </>
+                    ) : (
+                      'Copy Command & Wait for Login'
+                    )}
+                  </Button>
+                </div>
+              </div>
+            )}
+
+          {/* Loading State */}
+          {isChecking && (
+            <div className="flex items-center gap-3 p-4 rounded-lg bg-blue-500/10 border border-blue-500/20">
+              <Loader2 className="w-5 h-5 text-blue-500 animate-spin" />
+              <div>
+                <p className="font-medium text-foreground">Checking OpenCode CLI status...</p>
+              </div>
+            </div>
+          )}
+        </CardContent>
+      </Card>
+
+      {/* Navigation */}
+      <div className="flex justify-between pt-4">
+        <Button variant="ghost" onClick={onBack} className="text-muted-foreground">
+          <ArrowLeft className="w-4 h-4 mr-2" />
+          Back
+        </Button>
+        <div className="flex gap-2">
+          <Button variant="ghost" onClick={onSkip} className="text-muted-foreground">
+            {isReady ? 'Skip' : 'Skip for now'}
+          </Button>
+          <Button
+            onClick={onNext}
+            className="bg-brand-500 hover:bg-brand-600 text-white"
+            data-testid="opencode-next-button"
+          >
+            {isReady ? 'Continue' : 'Continue without OpenCode'}
+            <ArrowRight className="w-4 h-4 ml-2" />
+          </Button>
+        </div>
+      </div>
+
+      {/* Info note */}
+      <p className="text-xs text-muted-foreground text-center">
+        You can always configure OpenCode later in Settings
+      </p>
+    </div>
+  );
+}

apps/ui/src/store/app-store.ts

@@ -14,6 +14,7 @@ import type {
   AIProfile,
   CursorModelId,
   CodexModelId,
+  OpencodeModelId,
   PhaseModelConfig,
   PhaseModelKey,
   PhaseModelEntry,
@@ -23,7 +24,13 @@ import type {
   PipelineStep,
   PromptCustomization,
 } from '@automaker/types';
-import { getAllCursorModelIds, getAllCodexModelIds, DEFAULT_PHASE_MODELS } from '@automaker/types';
+import {
+  getAllCursorModelIds,
+  getAllCodexModelIds,
+  getAllOpencodeModelIds,
+  DEFAULT_PHASE_MODELS,
+  DEFAULT_OPENCODE_MODEL,
+} from '@automaker/types';
 
 const logger = createLogger('AppStore');
 
@@ -567,6 +574,10 @@ export interface AppState {
   codexEnableWebSearch: boolean; // Enable web search capability
   codexEnableImages: boolean; // Enable image processing
 
+  // OpenCode CLI Settings (global)
+  enabledOpencodeModels: OpencodeModelId[]; // Which OpenCode models are available in feature modal
+  opencodeDefaultModel: OpencodeModelId; // Default OpenCode model selection
+
   // Claude Agent SDK Settings
   autoLoadClaudeMd: boolean; // Auto-load CLAUDE.md files using SDK's settingSources option
   skipSandboxWarning: boolean; // Skip the sandbox environment warning dialog on startup
@@ -930,6 +941,11 @@ export interface AppActions {
   setCodexEnableWebSearch: (enabled: boolean) => Promise<void>;
   setCodexEnableImages: (enabled: boolean) => Promise<void>;
 
+  // OpenCode CLI Settings actions
+  setEnabledOpencodeModels: (models: OpencodeModelId[]) => void;
+  setOpencodeDefaultModel: (model: OpencodeModelId) => void;
+  toggleOpencodeModel: (model: OpencodeModelId, enabled: boolean) => void;
+
   // Claude Agent SDK Settings actions
   setAutoLoadClaudeMd: (enabled: boolean) => Promise<void>;
   setSkipSandboxWarning: (skip: boolean) => Promise<void>;
@@ -1167,6 +1183,8 @@ const initialState: AppState = {
   codexApprovalPolicy: 'on-request', // Default to on-request for balanced safety
   codexEnableWebSearch: false, // Default to disabled
   codexEnableImages: false, // Default to disabled
+  enabledOpencodeModels: getAllOpencodeModelIds(), // All OpenCode models enabled by default
+  opencodeDefaultModel: DEFAULT_OPENCODE_MODEL, // Default to Claude Sonnet 4.5
   autoLoadClaudeMd: false, // Default to disabled (user must opt-in)
   skipSandboxWarning: false, // Default to disabled (show sandbox warning dialog)
   mcpServers: [], // No MCP servers configured by default
@@ -1896,6 +1914,16 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     await syncSettingsToServer();
   },
 
+  // OpenCode CLI Settings actions
+  setEnabledOpencodeModels: (models) => set({ enabledOpencodeModels: models }),
+  setOpencodeDefaultModel: (model) => set({ opencodeDefaultModel: model }),
+  toggleOpencodeModel: (model, enabled) =>
+    set((state) => ({
+      enabledOpencodeModels: enabled
+        ? [...state.enabledOpencodeModels, model]
+        : state.enabledOpencodeModels.filter((m) => m !== model),
+    })),
+
   // Claude Agent SDK Settings actions
   setAutoLoadClaudeMd: async (enabled) => {
     const previous = get().autoLoadClaudeMd;

apps/ui/src/store/setup-store.ts

@@ -48,6 +48,20 @@ export interface CodexCliStatus {
   error?: string;
 }
 
+// OpenCode CLI Status
+export interface OpencodeCliStatus {
+  installed: boolean;
+  version?: string | null;
+  path?: string | null;
+  auth?: {
+    authenticated: boolean;
+    method: string;
+  };
+  installCommand?: string;
+  loginCommand?: string;
+  error?: string;
+}
+
 // Codex Auth Method
 export type CodexAuthMethod =
   | 'api_key_env' // OPENAI_API_KEY environment variable
@@ -103,6 +117,7 @@ export type SetupStep =
   | 'claude_auth'
   | 'cursor'
   | 'codex'
+  | 'opencode'
   | 'github'
   | 'complete';
 
@@ -128,6 +143,9 @@ export interface SetupState {
   codexAuthStatus: CodexAuthStatus | null;
   codexInstallProgress: InstallProgress;
 
+  // OpenCode CLI state
+  opencodeCliStatus: OpencodeCliStatus | null;
+
   // Setup preferences
   skipClaudeSetup: boolean;
 }
@@ -158,6 +176,9 @@ export interface SetupActions {
   setCodexInstallProgress: (progress: Partial<InstallProgress>) => void;
   resetCodexInstallProgress: () => void;
 
+  // OpenCode CLI
+  setOpencodeCliStatus: (status: OpencodeCliStatus | null) => void;
+
   // Preferences
   setSkipClaudeSetup: (skip: boolean) => void;
 }
@@ -188,6 +209,8 @@ const initialState: SetupState = {
   codexAuthStatus: null,
   codexInstallProgress: { ...initialInstallProgress },
 
+  opencodeCliStatus: null,
+
   skipClaudeSetup: shouldSkipSetup,
 };
 
@@ -255,6 +278,9 @@ export const useSetupStore = create<SetupState & SetupActions>()((set, get) => (
       codexInstallProgress: { ...initialInstallProgress },
     }),
 
+  // OpenCode CLI
+  setOpencodeCliStatus: (status) => set({ opencodeCliStatus: status }),
+
   // Preferences
   setSkipClaudeSetup: (skip) => set({ skipClaudeSetup: skip }),
 }));

libs/platform/src/index.ts

@@ -96,6 +96,9 @@ export {
   getCodexCliPaths,
   getCodexConfigDir,
   getCodexAuthPath,
+  getOpenCodeCliPaths,
+  getOpenCodeConfigDir,
+  getOpenCodeAuthPath,
   getShellPaths,
   getExtendedPath,
   // Node.js paths
@@ -126,6 +129,9 @@ export {
   findCodexCliPath,
   getCodexAuthIndicators,
   type CodexAuthIndicators,
+  findOpenCodeCliPath,
+  getOpenCodeAuthIndicators,
+  type OpenCodeAuthIndicators,
   // Electron userData operations
   setElectronUserDataPath,
   getElectronUserDataPath,

libs/platform/src/system-paths.ts

@@ -543,6 +543,11 @@ function getAllAllowedSystemPaths(): string[] {
     // Codex config directory and files
     getCodexConfigDir(),
     getCodexAuthPath(),
+    // OpenCode CLI paths
+    ...getOpenCodeCliPaths(),
+    // OpenCode config directory and files
+    getOpenCodeConfigDir(),
+    getOpenCodeAuthPath(),
     // Shell paths
     ...getShellPaths(),
     // Node.js system paths
@@ -564,6 +569,8 @@ function getAllAllowedSystemDirs(): string[] {
     getClaudeProjectsDir(),
     // Codex config
     getCodexConfigDir(),
+    // OpenCode config
+    getOpenCodeConfigDir(),
     // Version managers (need recursive access for version directories)
     ...getNvmPaths(),
     ...getFnmPaths(),
@@ -1007,3 +1014,148 @@ export async function getCodexAuthIndicators(): Promise<CodexAuthIndicators> {
 
   return result;
 }
+
+// =============================================================================
+// OpenCode CLI Detection
+// =============================================================================
+
+const OPENCODE_CONFIG_DIR_NAME = '.opencode';
+const OPENCODE_AUTH_FILENAME = 'auth.json';
+const OPENCODE_TOKENS_KEY = 'tokens';
+
+/**
+ * Get common paths where OpenCode CLI might be installed
+ */
+export function getOpenCodeCliPaths(): string[] {
+  const isWindows = process.platform === 'win32';
+  const homeDir = os.homedir();
+
+  if (isWindows) {
+    const appData = process.env.APPDATA || path.join(homeDir, 'AppData', 'Roaming');
+    const localAppData = process.env.LOCALAPPDATA || path.join(homeDir, 'AppData', 'Local');
+    return [
+      path.join(homeDir, '.local', 'bin', 'opencode.exe'),
+      path.join(appData, 'npm', 'opencode.cmd'),
+      path.join(appData, 'npm', 'opencode'),
+      path.join(appData, '.npm-global', 'bin', 'opencode.cmd'),
+      path.join(appData, '.npm-global', 'bin', 'opencode'),
+      // Volta on Windows
+      path.join(homeDir, '.volta', 'bin', 'opencode.exe'),
+      // pnpm on Windows
+      path.join(localAppData, 'pnpm', 'opencode.cmd'),
+      path.join(localAppData, 'pnpm', 'opencode'),
+      // Go installation (if OpenCode is a Go binary)
+      path.join(homeDir, 'go', 'bin', 'opencode.exe'),
+      path.join(process.env.GOPATH || path.join(homeDir, 'go'), 'bin', 'opencode.exe'),
+    ];
+  }
+
+  // Include NVM bin paths for opencode installed via npm global under NVM
+  const nvmBinPaths = getNvmBinPaths().map((binPath) => path.join(binPath, 'opencode'));
+
+  // Include fnm bin paths
+  const fnmBinPaths = getFnmBinPaths().map((binPath) => path.join(binPath, 'opencode'));
+
+  // pnpm global bin path
+  const pnpmHome = process.env.PNPM_HOME || path.join(homeDir, '.local', 'share', 'pnpm');
+
+  return [
+    // Standard locations
+    path.join(homeDir, '.local', 'bin', 'opencode'),
+    '/opt/homebrew/bin/opencode',
+    '/usr/local/bin/opencode',
+    '/usr/bin/opencode',
+    path.join(homeDir, '.npm-global', 'bin', 'opencode'),
+    // Linuxbrew
+    '/home/linuxbrew/.linuxbrew/bin/opencode',
+    // Volta
+    path.join(homeDir, '.volta', 'bin', 'opencode'),
+    // pnpm global
+    path.join(pnpmHome, 'opencode'),
+    // Yarn global
+    path.join(homeDir, '.yarn', 'bin', 'opencode'),
+    path.join(homeDir, '.config', 'yarn', 'global', 'node_modules', '.bin', 'opencode'),
+    // Go installation (if OpenCode is a Go binary)
+    path.join(homeDir, 'go', 'bin', 'opencode'),
+    path.join(process.env.GOPATH || path.join(homeDir, 'go'), 'bin', 'opencode'),
+    // Snap packages
+    '/snap/bin/opencode',
+    // NVM paths
+    ...nvmBinPaths,
+    // fnm paths
+    ...fnmBinPaths,
+  ];
+}
+
+/**
+ * Get the OpenCode configuration directory path
+ */
+export function getOpenCodeConfigDir(): string {
+  return path.join(os.homedir(), OPENCODE_CONFIG_DIR_NAME);
+}
+
+/**
+ * Get path to OpenCode auth file
+ */
+export function getOpenCodeAuthPath(): string {
+  return path.join(getOpenCodeConfigDir(), OPENCODE_AUTH_FILENAME);
+}
+
+/**
+ * Check if OpenCode CLI is installed and return its path
+ */
+export async function findOpenCodeCliPath(): Promise<string | null> {
+  return findFirstExistingPath(getOpenCodeCliPaths());
+}
+
+export interface OpenCodeAuthIndicators {
+  hasAuthFile: boolean;
+  hasOAuthToken: boolean;
+  hasApiKey: boolean;
+}
+
+const OPENCODE_OAUTH_KEYS = ['access_token', 'oauth_token'] as const;
+const OPENCODE_API_KEY_KEYS = ['api_key', 'OPENAI_API_KEY', 'ANTHROPIC_API_KEY'] as const;
+
+function getOpenCodeNestedTokens(record: Record<string, unknown>): Record<string, unknown> | null {
+  const tokens = record[OPENCODE_TOKENS_KEY];
+  if (tokens && typeof tokens === 'object' && !Array.isArray(tokens)) {
+    return tokens as Record<string, unknown>;
+  }
+  return null;
+}
+
+/**
+ * Get OpenCode authentication status by checking auth file indicators
+ */
+export async function getOpenCodeAuthIndicators(): Promise<OpenCodeAuthIndicators> {
+  const result: OpenCodeAuthIndicators = {
+    hasAuthFile: false,
+    hasOAuthToken: false,
+    hasApiKey: false,
+  };
+
+  try {
+    const authContent = await systemPathReadFile(getOpenCodeAuthPath());
+    result.hasAuthFile = true;
+
+    try {
+      const authJson = JSON.parse(authContent) as Record<string, unknown>;
+      result.hasOAuthToken = hasNonEmptyStringField(authJson, OPENCODE_OAUTH_KEYS);
+      result.hasApiKey = hasNonEmptyStringField(authJson, OPENCODE_API_KEY_KEYS);
+      const nestedTokens = getOpenCodeNestedTokens(authJson);
+      if (nestedTokens) {
+        result.hasOAuthToken =
+          result.hasOAuthToken || hasNonEmptyStringField(nestedTokens, OPENCODE_OAUTH_KEYS);
+        result.hasApiKey =
+          result.hasApiKey || hasNonEmptyStringField(nestedTokens, OPENCODE_API_KEY_KEYS);
+      }
+    } catch {
+      // Ignore parse errors; file exists but contents are unreadable
+    }
+  } catch {
+    // Auth file not found or inaccessible
+  }
+
+  return result;
+}

libs/types/src/index.ts

@@ -174,12 +174,16 @@ export type {
 export * from './cursor-models.js';
 export * from './cursor-cli.js';
 
+// OpenCode types
+export * from './opencode-models.js';
+
 // Provider utilities
 export {
   PROVIDER_PREFIXES,
   isCursorModel,
   isClaudeModel,
   isCodexModel,
+  isOpencodeModel,
   getModelProvider,
   stripProviderPrefix,
   addProviderPrefix,

libs/types/src/opencode-models.ts

@@ -0,0 +1,397 @@
+/**
+ * OpenCode Model IDs
+ * Models available via OpenCode CLI (opencode models command)
+ */
+export type OpencodeModelId =
+  // OpenCode Free Tier Models
+  | 'opencode/big-pickle'
+  | 'opencode/glm-4.7-free'
+  | 'opencode/gpt-5-nano'
+  | 'opencode/grok-code'
+  | 'opencode/minimax-m2.1-free'
+  // Amazon Bedrock - Claude Models
+  | 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0'
+  | 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0'
+  | 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0'
+  | 'amazon-bedrock/anthropic.claude-sonnet-4-20250514-v1:0'
+  | 'amazon-bedrock/anthropic.claude-opus-4-20250514-v1:0'
+  | 'amazon-bedrock/anthropic.claude-3-7-sonnet-20250219-v1:0'
+  | 'amazon-bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0'
+  | 'amazon-bedrock/anthropic.claude-3-opus-20240229-v1:0'
+  // Amazon Bedrock - DeepSeek Models
+  | 'amazon-bedrock/deepseek.r1-v1:0'
+  | 'amazon-bedrock/deepseek.v3-v1:0'
+  // Amazon Bedrock - Amazon Nova Models
+  | 'amazon-bedrock/amazon.nova-premier-v1:0'
+  | 'amazon-bedrock/amazon.nova-pro-v1:0'
+  | 'amazon-bedrock/amazon.nova-lite-v1:0'
+  // Amazon Bedrock - Meta Llama Models
+  | 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0'
+  | 'amazon-bedrock/meta.llama3-3-70b-instruct-v1:0'
+  // Amazon Bedrock - Mistral Models
+  | 'amazon-bedrock/mistral.mistral-large-2402-v1:0'
+  // Amazon Bedrock - Qwen Models
+  | 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0'
+  | 'amazon-bedrock/qwen.qwen3-235b-a22b-2507-v1:0';
+
+/**
+ * Provider type for OpenCode models
+ */
+export type OpencodeProvider =
+  | 'opencode'
+  | 'amazon-bedrock-anthropic'
+  | 'amazon-bedrock-deepseek'
+  | 'amazon-bedrock-amazon'
+  | 'amazon-bedrock-meta'
+  | 'amazon-bedrock-mistral'
+  | 'amazon-bedrock-qwen';
+
+/**
+ * Friendly aliases mapped to full model IDs
+ */
+export const OPENCODE_MODEL_MAP: Record<string, OpencodeModelId> = {
+  // OpenCode free tier aliases
+  'big-pickle': 'opencode/big-pickle',
+  pickle: 'opencode/big-pickle',
+  'glm-free': 'opencode/glm-4.7-free',
+  'gpt-nano': 'opencode/gpt-5-nano',
+  nano: 'opencode/gpt-5-nano',
+  'grok-code': 'opencode/grok-code',
+  grok: 'opencode/grok-code',
+  minimax: 'opencode/minimax-m2.1-free',
+
+  // Claude aliases (via Bedrock)
+  'claude-sonnet-4.5': 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+  'sonnet-4.5': 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+  sonnet: 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+  'claude-opus-4.5': 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+  'opus-4.5': 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+  opus: 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+  'claude-haiku-4.5': 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+  'haiku-4.5': 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+  haiku: 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+
+  // DeepSeek aliases
+  'deepseek-r1': 'amazon-bedrock/deepseek.r1-v1:0',
+  r1: 'amazon-bedrock/deepseek.r1-v1:0',
+  'deepseek-v3': 'amazon-bedrock/deepseek.v3-v1:0',
+
+  // Nova aliases
+  'nova-premier': 'amazon-bedrock/amazon.nova-premier-v1:0',
+  'nova-pro': 'amazon-bedrock/amazon.nova-pro-v1:0',
+  nova: 'amazon-bedrock/amazon.nova-pro-v1:0',
+
+  // Llama aliases
+  llama4: 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0',
+  'llama-4': 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0',
+  llama3: 'amazon-bedrock/meta.llama3-3-70b-instruct-v1:0',
+
+  // Qwen aliases
+  qwen: 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0',
+  'qwen-coder': 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0',
+} as const;
+
+/**
+ * OpenCode model metadata
+ */
+export interface OpencodeModelConfig {
+  id: OpencodeModelId;
+  label: string;
+  description: string;
+  supportsVision: boolean;
+  provider: OpencodeProvider;
+  tier: 'free' | 'standard' | 'premium';
+}
+
+/**
+ * Complete list of OpenCode model configurations
+ */
+export const OPENCODE_MODELS: OpencodeModelConfig[] = [
+  // OpenCode Free Tier Models
+  {
+    id: 'opencode/big-pickle',
+    label: 'Big Pickle',
+    description: 'OpenCode free tier model - great for general coding',
+    supportsVision: false,
+    provider: 'opencode',
+    tier: 'free',
+  },
+  {
+    id: 'opencode/glm-4.7-free',
+    label: 'GLM 4.7 Free',
+    description: 'OpenCode free tier GLM model',
+    supportsVision: false,
+    provider: 'opencode',
+    tier: 'free',
+  },
+  {
+    id: 'opencode/gpt-5-nano',
+    label: 'GPT-5 Nano',
+    description: 'OpenCode free tier nano model - fast and lightweight',
+    supportsVision: false,
+    provider: 'opencode',
+    tier: 'free',
+  },
+  {
+    id: 'opencode/grok-code',
+    label: 'Grok Code',
+    description: 'OpenCode free tier Grok model for coding',
+    supportsVision: false,
+    provider: 'opencode',
+    tier: 'free',
+  },
+  {
+    id: 'opencode/minimax-m2.1-free',
+    label: 'MiniMax M2.1 Free',
+    description: 'OpenCode free tier MiniMax model',
+    supportsVision: false,
+    provider: 'opencode',
+    tier: 'free',
+  },
+
+  // Amazon Bedrock - Claude Models
+  {
+    id: 'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0',
+    label: 'Claude Sonnet 4.5 (Bedrock)',
+    description: 'Latest Claude Sonnet via AWS Bedrock - fast and intelligent (default)',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-opus-4-5-20251101-v1:0',
+    label: 'Claude Opus 4.5 (Bedrock)',
+    description: 'Most capable Claude model via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-haiku-4-5-20251001-v1:0',
+    label: 'Claude Haiku 4.5 (Bedrock)',
+    description: 'Fastest Claude model via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'standard',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-sonnet-4-20250514-v1:0',
+    label: 'Claude Sonnet 4 (Bedrock)',
+    description: 'Claude Sonnet 4 via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-opus-4-20250514-v1:0',
+    label: 'Claude Opus 4 (Bedrock)',
+    description: 'Claude Opus 4 via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-3-7-sonnet-20250219-v1:0',
+    label: 'Claude 3.7 Sonnet (Bedrock)',
+    description: 'Claude 3.7 Sonnet via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'standard',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0',
+    label: 'Claude 3.5 Sonnet (Bedrock)',
+    description: 'Claude 3.5 Sonnet v2 via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'standard',
+  },
+  {
+    id: 'amazon-bedrock/anthropic.claude-3-opus-20240229-v1:0',
+    label: 'Claude 3 Opus (Bedrock)',
+    description: 'Claude 3 Opus via AWS Bedrock',
+    supportsVision: true,
+    provider: 'amazon-bedrock-anthropic',
+    tier: 'premium',
+  },
+
+  // Amazon Bedrock - DeepSeek Models
+  {
+    id: 'amazon-bedrock/deepseek.r1-v1:0',
+    label: 'DeepSeek R1 (Bedrock)',
+    description: 'DeepSeek R1 reasoning model via AWS Bedrock - excellent for coding',
+    supportsVision: false,
+    provider: 'amazon-bedrock-deepseek',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/deepseek.v3-v1:0',
+    label: 'DeepSeek V3 (Bedrock)',
+    description: 'DeepSeek V3 via AWS Bedrock',
+    supportsVision: false,
+    provider: 'amazon-bedrock-deepseek',
+    tier: 'standard',
+  },
+
+  // Amazon Bedrock - Amazon Nova Models
+  {
+    id: 'amazon-bedrock/amazon.nova-premier-v1:0',
+    label: 'Amazon Nova Premier (Bedrock)',
+    description: 'Amazon Nova Premier - most capable Nova model',
+    supportsVision: true,
+    provider: 'amazon-bedrock-amazon',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/amazon.nova-pro-v1:0',
+    label: 'Amazon Nova Pro (Bedrock)',
+    description: 'Amazon Nova Pro - balanced performance',
+    supportsVision: true,
+    provider: 'amazon-bedrock-amazon',
+    tier: 'standard',
+  },
+  {
+    id: 'amazon-bedrock/amazon.nova-lite-v1:0',
+    label: 'Amazon Nova Lite (Bedrock)',
+    description: 'Amazon Nova Lite - fast and efficient',
+    supportsVision: true,
+    provider: 'amazon-bedrock-amazon',
+    tier: 'standard',
+  },
+
+  // Amazon Bedrock - Meta Llama Models
+  {
+    id: 'amazon-bedrock/meta.llama4-maverick-17b-instruct-v1:0',
+    label: 'Llama 4 Maverick 17B (Bedrock)',
+    description: 'Meta Llama 4 Maverick via AWS Bedrock',
+    supportsVision: false,
+    provider: 'amazon-bedrock-meta',
+    tier: 'standard',
+  },
+  {
+    id: 'amazon-bedrock/meta.llama3-3-70b-instruct-v1:0',
+    label: 'Llama 3.3 70B (Bedrock)',
+    description: 'Meta Llama 3.3 70B via AWS Bedrock',
+    supportsVision: false,
+    provider: 'amazon-bedrock-meta',
+    tier: 'standard',
+  },
+
+  // Amazon Bedrock - Mistral Models
+  {
+    id: 'amazon-bedrock/mistral.mistral-large-2402-v1:0',
+    label: 'Mistral Large (Bedrock)',
+    description: 'Mistral Large via AWS Bedrock',
+    supportsVision: false,
+    provider: 'amazon-bedrock-mistral',
+    tier: 'standard',
+  },
+
+  // Amazon Bedrock - Qwen Models
+  {
+    id: 'amazon-bedrock/qwen.qwen3-coder-480b-a35b-v1:0',
+    label: 'Qwen3 Coder 480B (Bedrock)',
+    description: 'Qwen3 Coder 480B via AWS Bedrock - excellent for coding',
+    supportsVision: false,
+    provider: 'amazon-bedrock-qwen',
+    tier: 'premium',
+  },
+  {
+    id: 'amazon-bedrock/qwen.qwen3-235b-a22b-2507-v1:0',
+    label: 'Qwen3 235B (Bedrock)',
+    description: 'Qwen3 235B via AWS Bedrock',
+    supportsVision: false,
+    provider: 'amazon-bedrock-qwen',
+    tier: 'premium',
+  },
+];
+
+/**
+ * Complete model configuration map indexed by model ID
+ */
+export const OPENCODE_MODEL_CONFIG_MAP: Record<OpencodeModelId, OpencodeModelConfig> =
+  OPENCODE_MODELS.reduce(
+    (acc, config) => {
+      acc[config.id] = config;
+      return acc;
+    },
+    {} as Record<OpencodeModelId, OpencodeModelConfig>
+  );
+
+/**
+ * Default OpenCode model - Claude Sonnet 4.5 via Bedrock
+ */
+export const DEFAULT_OPENCODE_MODEL: OpencodeModelId =
+  'amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0';
+
+/**
+ * Helper: Get display name for model
+ */
+export function getOpencodeModelLabel(modelId: OpencodeModelId): string {
+  return OPENCODE_MODEL_CONFIG_MAP[modelId]?.label ?? modelId;
+}
+
+/**
+ * Helper: Get all OpenCode model IDs
+ */
+export function getAllOpencodeModelIds(): OpencodeModelId[] {
+  return OPENCODE_MODELS.map((config) => config.id);
+}
+
+/**
+ * Helper: Check if OpenCode model supports vision
+ */
+export function opencodeModelSupportsVision(modelId: OpencodeModelId): boolean {
+  return OPENCODE_MODEL_CONFIG_MAP[modelId]?.supportsVision ?? false;
+}
+
+/**
+ * Helper: Get the provider for a model
+ */
+export function getOpencodeModelProvider(modelId: OpencodeModelId): OpencodeProvider {
+  return OPENCODE_MODEL_CONFIG_MAP[modelId]?.provider ?? 'opencode';
+}
+
+/**
+ * Helper: Resolve an alias or partial model ID to a full model ID
+ */
+export function resolveOpencodeModelId(input: string): OpencodeModelId | undefined {
+  // Check if it's already a valid model ID
+  if (OPENCODE_MODEL_CONFIG_MAP[input as OpencodeModelId]) {
+    return input as OpencodeModelId;
+  }
+
+  // Check alias map
+  const normalized = input.toLowerCase();
+  return OPENCODE_MODEL_MAP[normalized];
+}
+
+/**
+ * Helper: Check if a string is a valid OpenCode model ID
+ */
+export function isOpencodeModelId(value: string): value is OpencodeModelId {
+  return value in OPENCODE_MODEL_CONFIG_MAP;
+}
+
+/**
+ * Helper: Get models filtered by provider
+ */
+export function getOpencodeModelsByProvider(provider: OpencodeProvider): OpencodeModelConfig[] {
+  return OPENCODE_MODELS.filter((config) => config.provider === provider);
+}
+
+/**
+ * Helper: Get models filtered by tier
+ */
+export function getOpencodeModelsByTier(
+  tier: 'free' | 'standard' | 'premium'
+): OpencodeModelConfig[] {
+  return OPENCODE_MODELS.filter((config) => config.tier === tier);
+}
+
+/**
+ * Helper: Get free tier models
+ */
+export function getOpencodeFreeModels(): OpencodeModelConfig[] {
+  return getOpencodeModelsByTier('free');
+}

libs/types/src/provider-utils.ts

@@ -9,11 +9,13 @@
 import type { ModelProvider } from './settings.js';
 import { CURSOR_MODEL_MAP, type CursorModelId } from './cursor-models.js';
 import { CLAUDE_MODEL_MAP, CODEX_MODEL_MAP, type CodexModelId } from './model.js';
+import { OPENCODE_MODEL_CONFIG_MAP } from './opencode-models.js';
 
 /** Provider prefix constants */
 export const PROVIDER_PREFIXES = {
   cursor: 'cursor-',
   codex: 'codex-',
+  opencode: 'opencode-',
   // Add new provider prefixes here
 } as const;
 
@@ -82,6 +84,41 @@ export function isCodexModel(model: string | undefined | null): boolean {
   return modelValues.includes(model as CodexModelId);
 }
 
+/**
+ * Check if a model string represents an OpenCode model
+ *
+ * OpenCode models can be identified by:
+ * - Explicit 'opencode-' prefix (for routing in Automaker)
+ * - 'opencode/' prefix (OpenCode free tier models)
+ * - 'amazon-bedrock/' prefix (AWS Bedrock models via OpenCode)
+ * - Full model ID from OPENCODE_MODEL_CONFIG_MAP
+ *
+ * @param model - Model string to check (e.g., "opencode-sonnet", "opencode/big-pickle", "amazon-bedrock/anthropic.claude-sonnet-4-5-20250929-v1:0")
+ * @returns true if the model is an OpenCode model
+ */
+export function isOpencodeModel(model: string | undefined | null): boolean {
+  if (!model || typeof model !== 'string') return false;
+
+  // Check for explicit opencode- prefix (Automaker routing prefix)
+  if (model.startsWith(PROVIDER_PREFIXES.opencode)) {
+    return true;
+  }
+
+  // Check if it's a known OpenCode model ID
+  if (model in OPENCODE_MODEL_CONFIG_MAP) {
+    return true;
+  }
+
+  // Check for OpenCode native model prefixes
+  // - opencode/ = OpenCode free tier models (e.g., opencode/big-pickle)
+  // - amazon-bedrock/ = AWS Bedrock models (e.g., amazon-bedrock/anthropic.claude-*)
+  if (model.startsWith('opencode/') || model.startsWith('amazon-bedrock/')) {
+    return true;
+  }
+
+  return false;
+}
+
 /**
  * Get the provider for a model string
  *
@@ -89,7 +126,11 @@ export function isCodexModel(model: string | undefined | null): boolean {
  * @returns The provider type, defaults to 'claude' for unknown models
  */
 export function getModelProvider(model: string | undefined | null): ModelProvider {
-  // Check Codex first before Cursor, since Cursor also supports gpt models
+  // Check OpenCode first since it uses provider-prefixed formats that could conflict
+  if (isOpencodeModel(model)) {
+    return 'opencode';
+  }
+  // Check Codex before Cursor, since Cursor also supports gpt models
   // but bare gpt-* should route to Codex
   if (isCodexModel(model)) {
     return 'codex';
@@ -145,6 +186,10 @@ export function addProviderPrefix(model: string, provider: ModelProvider): strin
     if (!model.startsWith(PROVIDER_PREFIXES.codex)) {
       return `${PROVIDER_PREFIXES.codex}${model}`;
     }
+  } else if (provider === 'opencode') {
+    if (!model.startsWith(PROVIDER_PREFIXES.opencode)) {
+      return `${PROVIDER_PREFIXES.opencode}${model}`;
+    }
   }
   // Claude models don't use prefixes
   return model;

libs/types/src/settings.ts

@@ -9,6 +9,8 @@
 import type { ModelAlias, AgentModel, CodexModelId } from './model.js';
 import type { CursorModelId } from './cursor-models.js';
 import { CURSOR_MODEL_MAP, getAllCursorModelIds } from './cursor-models.js';
+import type { OpencodeModelId } from './opencode-models.js';
+import { getAllOpencodeModelIds, DEFAULT_OPENCODE_MODEL } from './opencode-models.js';
 import type { PromptCustomization } from './prompts.js';
 import type { CodexSandboxMode, CodexApprovalPolicy } from './codex.js';
 
@@ -96,7 +98,7 @@ export function getThinkingTokenBudget(level: ThinkingLevel | undefined): number
 }
 
 /** ModelProvider - AI model provider for credentials and API key management */
-export type ModelProvider = 'claude' | 'cursor' | 'codex';
+export type ModelProvider = 'claude' | 'cursor' | 'codex' | 'opencode';
 
 const DEFAULT_CODEX_AUTO_LOAD_AGENTS = false;
 const DEFAULT_CODEX_SANDBOX_MODE: CodexSandboxMode = 'workspace-write';
@@ -257,6 +259,10 @@ export interface AIProfile {
   // Codex-specific settings
   /** Which Codex/GPT model to use - only for Codex provider */
   codexModel?: CodexModelId;
+
+  // OpenCode-specific settings
+  /** Which OpenCode model to use - only for OpenCode provider */
+  opencodeModel?: OpencodeModelId;
 }
 
 /**
@@ -280,6 +286,11 @@ export function profileHasThinking(profile: AIProfile): boolean {
     return model.startsWith('o');
   }
 
+  if (profile.provider === 'opencode') {
+    // OpenCode models don't expose thinking configuration
+    return false;
+  }
+
   return false;
 }
 
@@ -295,6 +306,10 @@ export function getProfileModelString(profile: AIProfile): string {
     return `codex:${profile.codexModel || 'gpt-5.2'}`;
   }
 
+  if (profile.provider === 'opencode') {
+    return `opencode:${profile.opencodeModel || DEFAULT_OPENCODE_MODEL}`;
+  }
+
   // Claude
   return profile.model || 'sonnet';
 }
@@ -473,6 +488,12 @@ export interface GlobalSettings {
   /** Default Cursor model selection when switching to Cursor CLI */
   cursorDefaultModel: CursorModelId;
 
+  // OpenCode CLI Settings (global)
+  /** Which OpenCode models are available in feature modal (empty = all) */
+  enabledOpencodeModels?: OpencodeModelId[];
+  /** Default OpenCode model selection when switching to OpenCode CLI */
+  opencodeDefaultModel?: OpencodeModelId;
+
   // Input Configuration
   /** User's keyboard shortcut bindings */
   keyboardShortcuts: KeyboardShortcuts;
@@ -717,6 +738,8 @@ export const DEFAULT_GLOBAL_SETTINGS: GlobalSettings = {
   validationModel: 'opus',
   enabledCursorModels: getAllCursorModelIds(),
   cursorDefaultModel: 'auto',
+  enabledOpencodeModels: getAllOpencodeModelIds(),
+  opencodeDefaultModel: DEFAULT_OPENCODE_MODEL,
   keyboardShortcuts: DEFAULT_KEYBOARD_SHORTCUTS,
   aiProfiles: [],
   projects: [],