feat: Add Codex CLI provider with OAuth authentication (#1273)

Co-authored-by: Ralph Khreish <35776126+Crunchyman-ralph@users.noreply.github.com>
This commit is contained in:
Ben Vargas
2025-10-05 14:04:45 -06:00
committed by GitHub
parent 86027f1ee4
commit b43b7ce201
28 changed files with 2496 additions and 78 deletions

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@@ -383,6 +383,12 @@ task-master models --set-main=my-local-llama --ollama
# Set a custom OpenRouter model for the research role
task-master models --set-research=google/gemini-pro --openrouter
# Set Codex CLI model for the main role (uses ChatGPT subscription via OAuth)
task-master models --set-main=gpt-5-codex --codex-cli
# Set Codex CLI model for the fallback role
task-master models --set-fallback=gpt-5 --codex-cli
# Run interactive setup to configure models, including custom ones
task-master models --setup
```

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@@ -429,3 +429,153 @@ Azure OpenAI provides enterprise-grade OpenAI models through Microsoft's Azure c
- Verify the deployment name matches your configuration exactly (case-sensitive)
- Ensure the model deployment is in a "Succeeded" state in Azure OpenAI Studio
- Ensure youre not getting rate limited by `maxTokens` maintain appropriate Tokens per Minute Rate Limit (TPM) in your deployment.
### Codex CLI Provider
The Codex CLI provider integrates Task Master with OpenAI's Codex CLI, allowing you to use ChatGPT subscription models via OAuth authentication.
1. **Prerequisites**:
- Node.js >= 18
- Codex CLI >= 0.42.0 (>= 0.44.0 recommended)
- ChatGPT subscription: Plus, Pro, Business, Edu, or Enterprise (for OAuth access to GPT-5 models)
2. **Installation**:
```bash
npm install -g @openai/codex
```
3. **Authentication** (OAuth - Primary Method):
```bash
codex login
```
This will open a browser window for OAuth authentication with your ChatGPT account. Once authenticated, Task Master will automatically use these credentials.
4. **Optional API Key Method**:
While OAuth is the primary and recommended authentication method, you can optionally set an OpenAI API key:
```bash
# In .env file
OPENAI_API_KEY=sk-your-openai-api-key-here
```
**Note**: The API key will only be injected if explicitly provided. OAuth is always preferred.
5. **Configuration**:
```json
// In .taskmaster/config.json
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5-codex",
"maxTokens": 128000,
"temperature": 0.2
},
"fallback": {
"provider": "codex-cli",
"modelId": "gpt-5",
"maxTokens": 128000,
"temperature": 0.2
}
},
"codexCli": {
"allowNpx": true,
"skipGitRepoCheck": true,
"approvalMode": "on-failure",
"sandboxMode": "workspace-write"
}
}
```
6. **Available Models**:
- `gpt-5` - Latest GPT-5 model (272K max input, 128K max output)
- `gpt-5-codex` - GPT-5 optimized for agentic software engineering (272K max input, 128K max output)
7. **Codex CLI Settings (`codexCli` section)**:
The `codexCli` section in your configuration file supports the following options:
- **`allowNpx`** (boolean, default: `false`): Allow fallback to `npx @openai/codex` if CLI not found on PATH
- **`skipGitRepoCheck`** (boolean, default: `false`): Skip git repository safety check (recommended for CI/non-repo usage)
- **`approvalMode`** (string): Control command execution approval
- `"untrusted"`: Require approval for all commands
- `"on-failure"`: Only require approval after a command fails (default)
- `"on-request"`: Approve only when explicitly requested
- `"never"`: Never require approval (not recommended)
- **`sandboxMode`** (string): Control filesystem access
- `"read-only"`: Read-only access
- `"workspace-write"`: Allow writes to workspace (default)
- `"danger-full-access"`: Full filesystem access (use with caution)
- **`codexPath`** (string, optional): Custom path to codex CLI executable
- **`cwd`** (string, optional): Working directory for Codex CLI execution
- **`fullAuto`** (boolean, optional): Fully automatic mode (equivalent to `--full-auto` flag)
- **`dangerouslyBypassApprovalsAndSandbox`** (boolean, optional): Bypass all safety checks (dangerous!)
- **`color`** (string, optional): Color handling - `"always"`, `"never"`, or `"auto"`
- **`outputLastMessageFile`** (string, optional): Write last agent message to specified file
- **`verbose`** (boolean, optional): Enable verbose logging
- **`env`** (object, optional): Additional environment variables for Codex CLI
8. **Command-Specific Settings** (optional):
You can override settings for specific Task Master commands:
```json
{
"codexCli": {
"allowNpx": true,
"approvalMode": "on-failure",
"commandSpecific": {
"parse-prd": {
"approvalMode": "never",
"verbose": true
},
"expand": {
"sandboxMode": "read-only"
}
}
}
}
```
9. **Codebase Features**:
The Codex CLI provider is codebase-capable, meaning it can analyze and interact with your project files. Codebase analysis features are automatically enabled when using `codex-cli` as your provider and `enableCodebaseAnalysis` is set to `true` in your global configuration (default).
10. **Setup Commands**:
```bash
# Set Codex CLI for main role
task-master models --set-main gpt-5-codex --codex-cli
# Set Codex CLI for fallback role
task-master models --set-fallback gpt-5 --codex-cli
# Verify configuration
task-master models
```
11. **Troubleshooting**:
**"codex: command not found" error:**
- Install Codex CLI globally: `npm install -g @openai/codex`
- Verify installation: `codex --version`
- Alternatively, enable `allowNpx: true` in your codexCli configuration
**"Not logged in" errors:**
- Run `codex login` to authenticate with your ChatGPT account
- Verify authentication status: `codex` (opens interactive CLI)
**"Old version" warnings:**
- Check version: `codex --version`
- Upgrade: `npm install -g @openai/codex@latest`
- Minimum version: 0.42.0, recommended: >= 0.44.0
**"Model not available" errors:**
- Only `gpt-5` and `gpt-5-codex` are available via OAuth subscription
- Verify your ChatGPT subscription is active
- For other OpenAI models, use the standard `openai` provider with an API key
**API key not being used:**
- API key is only injected when explicitly provided
- OAuth authentication is always preferred
- If you want to use an API key, ensure `OPENAI_API_KEY` is set in your `.env` file
12. **Important Notes**:
- OAuth subscription required for model access (no API key needed for basic operation)
- Limited to OAuth-available models only (`gpt-5` and `gpt-5-codex`)
- Pricing information is not available for OAuth models (shows as "Unknown" in cost calculations)
- See [Codex CLI Provider Documentation](./providers/codex-cli.md) for more details

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@@ -0,0 +1,463 @@
# Codex CLI Provider Usage Examples
This guide provides practical examples of using Task Master with the Codex CLI provider.
## Prerequisites
Before using these examples, ensure you have:
```bash
# 1. Codex CLI installed
npm install -g @openai/codex
# 2. Authenticated with ChatGPT
codex login
# 3. Codex CLI configured as your provider
task-master models --set-main gpt-5-codex --codex-cli
```
## Example 1: Basic Task Creation
Use Codex CLI to create tasks from a simple description:
```bash
# Add a task with AI-powered enhancement
task-master add-task --prompt="Implement user authentication with JWT" --research
```
**What happens**:
1. Task Master sends your prompt to GPT-5-Codex via the CLI
2. The AI analyzes your request and generates a detailed task
3. The task is added to your `.taskmaster/tasks/tasks.json`
4. OAuth credentials are automatically used (no API key needed)
## Example 2: Parsing a Product Requirements Document
Create a comprehensive task list from a PRD:
```bash
# Create your PRD
cat > my-feature.txt <<EOF
# User Profile Feature
## Requirements
1. Users can view their profile
2. Users can edit their information
3. Profile pictures can be uploaded
4. Email verification required
## Technical Constraints
- Use React for frontend
- Node.js/Express backend
- PostgreSQL database
EOF
# Parse with Codex CLI
task-master parse-prd my-feature.txt --num-tasks 12
```
**What happens**:
1. GPT-5-Codex reads and analyzes your PRD
2. Generates structured tasks with dependencies
3. Creates subtasks for complex items
4. Saves everything to `.taskmaster/tasks/`
## Example 3: Expanding Tasks with Research
Break down a complex task into detailed subtasks:
```bash
# First, show your current tasks
task-master list
# Expand a specific task (e.g., task 1.2)
task-master expand --id=1.2 --research --force
```
**What happens**:
1. Codex CLI uses GPT-5 for research-level analysis
2. Breaks down the task into logical subtasks
3. Adds implementation details and test strategies
4. Updates the task with dependency information
## Example 4: Analyzing Project Complexity
Get AI-powered insights into your project's task complexity:
```bash
# Analyze all tasks
task-master analyze-complexity --research
# View the complexity report
task-master complexity-report
```
**What happens**:
1. GPT-5 analyzes each task's scope and requirements
2. Assigns complexity scores and estimates subtask counts
3. Generates a detailed report
4. Saves to `.taskmaster/reports/task-complexity-report.json`
## Example 5: Using Custom Codex CLI Settings
Configure Codex CLI behavior for different commands:
```json
// In .taskmaster/config.json
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5-codex",
"maxTokens": 128000,
"temperature": 0.2
}
},
"codexCli": {
"allowNpx": true,
"approvalMode": "on-failure",
"sandboxMode": "workspace-write",
"commandSpecific": {
"parse-prd": {
"verbose": true,
"approvalMode": "never"
},
"expand": {
"sandboxMode": "read-only",
"verbose": true
}
}
}
}
```
```bash
# Now parse-prd runs with verbose output and no approvals
task-master parse-prd requirements.txt
# Expand runs with read-only mode
task-master expand --id=2.1
```
## Example 6: Workflow - Building a Feature End-to-End
Complete workflow from PRD to implementation tracking:
```bash
# Step 1: Initialize project
task-master init
# Step 2: Set up Codex CLI
task-master models --set-main gpt-5-codex --codex-cli
task-master models --set-fallback gpt-5 --codex-cli
# Step 3: Create PRD
cat > feature-prd.txt <<EOF
# Authentication System
Implement a complete authentication system with:
- User registration
- Email verification
- Password reset
- Two-factor authentication
- Session management
EOF
# Step 4: Parse PRD into tasks
task-master parse-prd feature-prd.txt --num-tasks 8
# Step 5: Analyze complexity
task-master analyze-complexity --research
# Step 6: Expand complex tasks
task-master expand --all --research
# Step 7: Start working
task-master next
# Shows: Task 1.1: User registration database schema
# Step 8: Mark completed as you work
task-master set-status --id=1.1 --status=done
# Step 9: Continue to next task
task-master next
```
## Example 7: Multi-Role Configuration
Use Codex CLI for main tasks, Perplexity for research:
```json
// In .taskmaster/config.json
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5-codex",
"maxTokens": 128000,
"temperature": 0.2
},
"research": {
"provider": "perplexity",
"modelId": "sonar-pro",
"maxTokens": 8700,
"temperature": 0.1
},
"fallback": {
"provider": "codex-cli",
"modelId": "gpt-5",
"maxTokens": 128000,
"temperature": 0.2
}
}
}
```
```bash
# Main task operations use GPT-5-Codex
task-master add-task --prompt="Build REST API endpoint"
# Research operations use Perplexity
task-master analyze-complexity --research
# Fallback to GPT-5 if needed
task-master expand --id=3.2 --force
```
## Example 8: Troubleshooting Common Issues
### Issue: Codex CLI not found
```bash
# Check if Codex is installed
codex --version
# If not found, install globally
npm install -g @openai/codex
# Or enable npx fallback in config
cat >> .taskmaster/config.json <<EOF
{
"codexCli": {
"allowNpx": true
}
}
EOF
```
### Issue: Not authenticated
```bash
# Check auth status
codex
# Use /about command to see auth info
# Re-authenticate if needed
codex login
```
### Issue: Want more verbose output
```bash
# Enable verbose mode in config
cat >> .taskmaster/config.json <<EOF
{
"codexCli": {
"verbose": true
}
}
EOF
# Or for specific commands
task-master parse-prd my-prd.txt
# (verbose output shows detailed Codex CLI interactions)
```
## Example 9: CI/CD Integration
Use Codex CLI in automated workflows:
```yaml
# .github/workflows/task-analysis.yml
name: Analyze Task Complexity
on:
push:
paths:
- '.taskmaster/**'
jobs:
analyze:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: '20'
- name: Install Task Master
run: npm install -g task-master-ai
- name: Configure Codex CLI
run: |
npm install -g @openai/codex
echo "${{ secrets.OPENAI_CODEX_API_KEY }}" > ~/.codex-auth
env:
OPENAI_CODEX_API_KEY: ${{ secrets.OPENAI_CODEX_API_KEY }}
- name: Configure Task Master
run: |
cat > .taskmaster/config.json <<EOF
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5"
}
},
"codexCli": {
"allowNpx": true,
"skipGitRepoCheck": true,
"approvalMode": "never",
"fullAuto": true
}
}
EOF
- name: Analyze Complexity
run: task-master analyze-complexity --research
- name: Upload Report
uses: actions/upload-artifact@v3
with:
name: complexity-report
path: .taskmaster/reports/task-complexity-report.json
```
## Best Practices
### 1. Use OAuth for Development
```bash
# For local development, use OAuth (no API key needed)
codex login
task-master models --set-main gpt-5-codex --codex-cli
```
### 2. Configure Approval Modes Appropriately
```json
{
"codexCli": {
"approvalMode": "on-failure", // Safe default
"sandboxMode": "workspace-write" // Restricts to project directory
}
}
```
### 3. Use Command-Specific Settings
```json
{
"codexCli": {
"commandSpecific": {
"parse-prd": {
"approvalMode": "never", // PRD parsing is safe
"verbose": true
},
"expand": {
"approvalMode": "on-request", // More cautious for task expansion
"verbose": false
}
}
}
}
```
### 4. Leverage Codebase Analysis
```json
{
"global": {
"enableCodebaseAnalysis": true // Let Codex analyze your code
}
}
```
### 5. Handle Errors Gracefully
```bash
# Always configure a fallback model
task-master models --set-fallback gpt-5 --codex-cli
# Or use a different provider as fallback
task-master models --set-fallback claude-3-5-sonnet
```
## Next Steps
- Read the [Codex CLI Provider Documentation](../providers/codex-cli.md)
- Explore [Configuration Options](../configuration.md#codex-cli-provider)
- Check out [Command Reference](../command-reference.md)
- Learn about [Task Structure](../task-structure.md)
## Common Patterns
### Pattern: Daily Development Workflow
```bash
# Morning: Review tasks
task-master list
# Get next task
task-master next
# Work on task...
# Update task with notes
task-master update-subtask --id=2.3 --prompt="Implemented authentication middleware"
# Mark complete
task-master set-status --id=2.3 --status=done
# Repeat
```
### Pattern: Feature Planning
```bash
# Write feature spec
vim new-feature.txt
# Generate tasks
task-master parse-prd new-feature.txt --num-tasks 10
# Analyze and expand
task-master analyze-complexity --research
task-master expand --all --research --force
# Review and adjust
task-master list
```
### Pattern: Sprint Planning
```bash
# Parse sprint requirements
task-master parse-prd sprint-requirements.txt
# Analyze complexity
task-master analyze-complexity --research
# View report
task-master complexity-report
# Adjust task estimates based on complexity scores
```
---
For more examples and advanced usage, see the [full documentation](https://docs.task-master.dev).

510
docs/providers/codex-cli.md Normal file
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# Codex CLI Provider
The `codex-cli` provider integrates Task Master with OpenAI's Codex CLI via the community AI SDK provider [`ai-sdk-provider-codex-cli`](https://github.com/ben-vargas/ai-sdk-provider-codex-cli). It uses your ChatGPT subscription (OAuth) via `codex login`, with optional `OPENAI_CODEX_API_KEY` support.
## Why Use Codex CLI?
The primary benefits of using the `codex-cli` provider include:
- **Use Latest OpenAI Models**: Access to cutting-edge models like GPT-5 and GPT-5-Codex via ChatGPT subscription
- **OAuth Authentication**: No API key management needed - authenticate once with `codex login`
- **Built-in Tool Execution**: Native support for command execution, file changes, MCP tools, and web search
- **Native JSON Schema Support**: Structured output generation without post-processing
- **Approval/Sandbox Modes**: Fine-grained control over command execution and filesystem access for safety
## Quickstart
Get up and running with Codex CLI in 3 steps:
```bash
# 1. Install Codex CLI globally
npm install -g @openai/codex
# 2. Authenticate with your ChatGPT account
codex login
# 3. Configure Task Master to use Codex CLI
task-master models --set-main gpt-5-codex --codex-cli
```
## Requirements
- **Node.js**: >= 18.0.0
- **Codex CLI**: >= 0.42.0 (>= 0.44.0 recommended)
- **ChatGPT Subscription**: Required for OAuth access (Plus, Pro, Business, Edu, or Enterprise)
- **Task Master**: >= 0.27.3 (version with Codex CLI support)
### Checking Your Versions
```bash
# Check Node.js version
node --version
# Check Codex CLI version
codex --version
# Check Task Master version
task-master --version
```
## Installation
### Install Codex CLI
```bash
# Install globally via npm
npm install -g @openai/codex
# Verify installation
codex --version
```
Expected output: `v0.44.0` or higher
### Install Task Master (if not already installed)
```bash
# Install globally
npm install -g task-master-ai
# Or install in your project
npm install --save-dev task-master-ai
```
## Authentication
### OAuth Authentication (Primary Method - Recommended)
The Codex CLI provider is designed to use OAuth authentication with your ChatGPT subscription:
```bash
# Launch Codex CLI and authenticate
codex login
```
This will:
1. Open a browser window for OAuth authentication
2. Prompt you to log in with your ChatGPT account
3. Store authentication credentials locally
4. Allow Task Master to automatically use these credentials
To verify your authentication:
```bash
# Open interactive Codex CLI
codex
# Use /about command to see auth status
/about
```
### Optional: API Key Method
While OAuth is the primary and recommended method, you can optionally use an OpenAI API key:
```bash
# In your .env file
OPENAI_CODEX_API_KEY=sk-your-openai-api-key-here
```
**Important Notes**:
- The API key will **only** be injected when explicitly provided
- OAuth authentication is always preferred when available
- Using an API key doesn't provide access to subscription-only models like GPT-5-Codex
- For full OpenAI API access with non-subscription models, consider using the standard `openai` provider instead
- `OPENAI_CODEX_API_KEY` is specific to the codex-cli provider to avoid conflicts with the `openai` provider's `OPENAI_API_KEY`
## Available Models
The Codex CLI provider supports only models available through ChatGPT subscription:
| Model ID | Description | Max Input Tokens | Max Output Tokens |
|----------|-------------|------------------|-------------------|
| `gpt-5` | Latest GPT-5 model | 272K | 128K |
| `gpt-5-codex` | GPT-5 optimized for agentic software engineering | 272K | 128K |
**Note**: These models are only available via OAuth subscription through Codex CLI (ChatGPT Plus, Pro, Business, Edu, or Enterprise plans). For other OpenAI models, use the standard `openai` provider with an API key.
**Research Capabilities**: Both GPT-5 models support web search tools, making them suitable for the `research` role in addition to `main` and `fallback` roles.
## Configuration
### Basic Configuration
Add Codex CLI to your `.taskmaster/config.json`:
```json
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5-codex",
"maxTokens": 128000,
"temperature": 0.2
},
"fallback": {
"provider": "codex-cli",
"modelId": "gpt-5",
"maxTokens": 128000,
"temperature": 0.2
}
}
}
```
### Advanced Configuration with Codex CLI Settings
The `codexCli` section allows you to customize Codex CLI behavior:
```json
{
"models": {
"main": {
"provider": "codex-cli",
"modelId": "gpt-5-codex",
"maxTokens": 128000,
"temperature": 0.2
}
},
"codexCli": {
"allowNpx": true,
"skipGitRepoCheck": true,
"approvalMode": "on-failure",
"sandboxMode": "workspace-write",
"verbose": false
}
}
```
### Codex CLI Settings Reference
#### Core Settings
- **`allowNpx`** (boolean, default: `false`)
- Allow fallback to `npx @openai/codex` if the CLI is not found on PATH
- Useful for CI environments or systems without global npm installations
- Example: `"allowNpx": true`
- **`skipGitRepoCheck`** (boolean, default: `false`)
- Skip git repository safety check before execution
- Recommended for CI environments or non-repository usage
- Example: `"skipGitRepoCheck": true`
#### Execution Control
- **`approvalMode`** (string)
- Controls when to require user approval for command execution
- Options:
- `"untrusted"`: Require approval for all commands
- `"on-failure"`: Only require approval after a command fails (default)
- `"on-request"`: Approve only when explicitly requested
- `"never"`: Never require approval (use with caution)
- Example: `"approvalMode": "on-failure"`
- **`sandboxMode`** (string)
- Controls filesystem access permissions
- Options:
- `"read-only"`: Read-only access to filesystem
- `"workspace-write"`: Allow writes to workspace directory (default)
- `"danger-full-access"`: Full filesystem access (use with extreme caution)
- Example: `"sandboxMode": "workspace-write"`
#### Path and Environment
- **`codexPath`** (string, optional)
- Custom path to Codex CLI executable
- Useful when Codex is installed in a non-standard location
- Example: `"codexPath": "/usr/local/bin/codex"`
- **`cwd`** (string, optional)
- Working directory for Codex CLI execution
- Defaults to current working directory
- Example: `"cwd": "/path/to/project"`
- **`env`** (object, optional)
- Additional environment variables for Codex CLI
- Example: `"env": { "DEBUG": "true" }`
#### Advanced Settings
- **`fullAuto`** (boolean, optional)
- Fully automatic mode (equivalent to `--full-auto` flag)
- Bypasses most approvals for fully automated workflows
- Example: `"fullAuto": true`
- **`dangerouslyBypassApprovalsAndSandbox`** (boolean, optional)
- Bypass all safety checks including approvals and sandbox
- **WARNING**: Use with extreme caution - can execute arbitrary code
- Example: `"dangerouslyBypassApprovalsAndSandbox": false`
- **`color`** (string, optional)
- Force color handling in Codex CLI output
- Options: `"always"`, `"never"`, `"auto"`
- Example: `"color": "auto"`
- **`outputLastMessageFile`** (string, optional)
- Write last agent message to specified file
- Useful for debugging or logging
- Example: `"outputLastMessageFile": "./last-message.txt"`
- **`verbose`** (boolean, optional)
- Enable verbose provider logging
- Helpful for debugging issues
- Example: `"verbose": true`
### Command-Specific Settings
Override settings for specific Task Master commands:
```json
{
"codexCli": {
"allowNpx": true,
"approvalMode": "on-failure",
"commandSpecific": {
"parse-prd": {
"approvalMode": "never",
"verbose": true
},
"expand": {
"sandboxMode": "read-only"
},
"add-task": {
"approvalMode": "untrusted"
}
}
}
}
```
## Usage
### Setting Codex CLI Models
```bash
# Set Codex CLI for main role
task-master models --set-main gpt-5-codex --codex-cli
# Set Codex CLI for fallback role
task-master models --set-fallback gpt-5 --codex-cli
# Set Codex CLI for research role
task-master models --set-research gpt-5 --codex-cli
# Verify configuration
task-master models
```
### Using Codex CLI with Task Master Commands
Once configured, use Task Master commands as normal:
```bash
# Parse a PRD with Codex CLI
task-master parse-prd my-requirements.txt
# Analyze project complexity
task-master analyze-complexity --research
# Expand a task into subtasks
task-master expand --id=1.2
# Add a new task with AI assistance
task-master add-task --prompt="Implement user authentication" --research
```
The provider will automatically use your OAuth credentials when Codex CLI is configured.
## Codebase Features
The Codex CLI provider is **codebase-capable**, meaning it can analyze and interact with your project files. This enables advanced features like:
- **Code Analysis**: Understanding your project structure and dependencies
- **Intelligent Suggestions**: Context-aware task recommendations
- **File Operations**: Reading and analyzing project files for better task generation
- **Pattern Recognition**: Identifying common patterns and best practices in your codebase
### Enabling Codebase Analysis
Codebase analysis is automatically enabled when:
1. Your provider is set to `codex-cli`
2. `enableCodebaseAnalysis` is `true` in your global configuration (default)
To verify or configure:
```json
{
"global": {
"enableCodebaseAnalysis": true
}
}
```
## Troubleshooting
### "codex: command not found" Error
**Symptoms**: Task Master reports that the Codex CLI is not found.
**Solutions**:
1. **Install Codex CLI globally**:
```bash
npm install -g @openai/codex
```
2. **Verify installation**:
```bash
codex --version
```
3. **Alternative: Enable npx fallback**:
```json
{
"codexCli": {
"allowNpx": true
}
}
```
### "Not logged in" Errors
**Symptoms**: Authentication errors when trying to use Codex CLI.
**Solutions**:
1. **Authenticate with OAuth**:
```bash
codex login
```
2. **Verify authentication status**:
```bash
codex
# Then use /about command
```
3. **Re-authenticate if needed**:
```bash
# Logout first
codex
# Use /auth command to change auth method
# Then login again
codex login
```
### "Old version" Warnings
**Symptoms**: Warnings about Codex CLI version being outdated.
**Solutions**:
1. **Check current version**:
```bash
codex --version
```
2. **Upgrade to latest version**:
```bash
npm install -g @openai/codex@latest
```
3. **Verify upgrade**:
```bash
codex --version
```
Should show >= 0.44.0
### "Model not available" Errors
**Symptoms**: Error indicating the requested model is not available.
**Causes and Solutions**:
1. **Using unsupported model**:
- Only `gpt-5` and `gpt-5-codex` are available via Codex CLI
- For other OpenAI models, use the standard `openai` provider
2. **Subscription not active**:
- Verify your ChatGPT subscription is active
- Check subscription status at <https://platform.openai.com>
3. **Wrong provider selected**:
- Verify you're using `--codex-cli` flag when setting models
- Check `.taskmaster/config.json` shows `"provider": "codex-cli"`
### API Key Not Being Used
**Symptoms**: You've set `OPENAI_CODEX_API_KEY` but it's not being used.
**Expected Behavior**:
- OAuth authentication is always preferred
- API key is only injected when explicitly provided
- API key doesn't grant access to subscription-only models
**Solutions**:
1. **Verify OAuth is working**:
```bash
codex
# Check /about for auth status
```
2. **If you want to force API key usage**:
- This is not recommended with Codex CLI
- Consider using the standard `openai` provider instead
3. **Verify .env file is being loaded**:
```bash
# Check if .env exists in project root
ls -la .env
# Verify OPENAI_CODEX_API_KEY is set
grep OPENAI_CODEX_API_KEY .env
```
### Approval/Sandbox Issues
**Symptoms**: Commands are blocked or filesystem access is denied.
**Solutions**:
1. **Adjust approval mode**:
```json
{
"codexCli": {
"approvalMode": "on-request"
}
}
```
2. **Adjust sandbox mode**:
```json
{
"codexCli": {
"sandboxMode": "workspace-write"
}
}
```
3. **For fully automated workflows** (use cautiously):
```json
{
"codexCli": {
"fullAuto": true
}
}
```
## Important Notes
- **OAuth subscription required**: No API key needed for basic operation, but requires active ChatGPT subscription
- **Limited model selection**: Only `gpt-5` and `gpt-5-codex` available via OAuth
- **Pricing information**: Not available for OAuth models (shows as "Unknown" in cost calculations)
- **No automatic dependency**: The `@openai/codex` package is not added to Task Master's dependencies - install it globally or enable `allowNpx`
- **Codebase analysis**: Automatically enabled when using `codex-cli` provider
- **Safety first**: Default settings prioritize safety with `approvalMode: "on-failure"` and `sandboxMode: "workspace-write"`
## See Also
- [Configuration Guide](../configuration.md#codex-cli-provider) - Complete Codex CLI configuration reference
- [Command Reference](../command-reference.md) - Using `--codex-cli` flag with commands
- [Gemini CLI Provider](./gemini-cli.md) - Similar CLI-based provider for Google Gemini
- [Claude Code Integration](../claude-code-integration.md) - Another CLI-based provider
- [ai-sdk-provider-codex-cli](https://github.com/ben-vargas/ai-sdk-provider-codex-cli) - Source code for the provider package