Implement validate-dependencies MCP command for checking dependency validity

.changeset/two-bats-smoke.md

@@ -13,9 +13,10 @@
 - Implement add-task MCP command for creating new tasks using AI assistance
 - Implement add-subtask MCP command for adding subtasks to existing tasks
 - Implement remove-subtask MCP command for removing subtasks from parent tasks
-- Implement analyze-complexity MCP command for analyzing task complexity and generating recommendations
+- Implement expand-all MCP command for expanding all tasks into subtasks
+- Implement analyze-complexity MCP command for analyzing task complexity
 - Implement clear-subtasks MCP command for clearing subtasks from parent tasks
-- Implement expand-all MCP command for expanding all pending tasks with subtasks
 - Implement remove-dependency MCP command for removing dependencies from tasks
+- Implement validate-dependencies MCP command for checking validity of task dependencies
 - Document MCP server naming conventions in architecture.mdc and mcp.mdc files (file names use kebab-case, direct functions use camelCase with Direct suffix, tool registration functions use camelCase with Tool suffix, and MCP tool names use snake_case)
 - Enhance task show view with a color-coded progress bar for visualizing subtask completion percentage

mcp-server/src/core/direct-functions/validate-dependencies.js

@@ -0,0 +1,55 @@
+/**
+ * Direct function wrapper for validateDependenciesCommand
+ */
+
+import { validateDependenciesCommand } from '../../../../scripts/modules/dependency-manager.js';
+import { findTasksJsonPath } from '../utils/path-utils.js';
+import fs from 'fs';
+
+/**
+ * Validate dependencies in tasks.json
+ * @param {Object} args - Function arguments
+ * @param {string} [args.file] - Path to the tasks file
+ * @param {string} [args.projectRoot] - Project root directory
+ * @param {Object} log - Logger object
+ * @returns {Promise<{success: boolean, data?: Object, error?: {code: string, message: string}}>}
+ */
+export async function validateDependenciesDirect(args, log) {
+  try {
+    log.info(`Validating dependencies in tasks...`);
+    
+    // Determine the tasks file path
+    const tasksPath = args.file || await findTasksJsonPath(args.projectRoot);
+    
+    // Verify the file exists
+    if (!fs.existsSync(tasksPath)) {
+      return {
+        success: false,
+        error: {
+          code: 'FILE_NOT_FOUND',
+          message: `Tasks file not found at ${tasksPath}`
+        }
+      };
+    }
+    
+    // Call the original command function
+    await validateDependenciesCommand(tasksPath);
+    
+    return {
+      success: true,
+      data: {
+        message: 'Dependencies validated successfully',
+        tasksPath
+      }
+    };
+  } catch (error) {
+    log.error(`Error validating dependencies: ${error.message}`);
+    return {
+      success: false,
+      error: {
+        code: 'VALIDATION_ERROR',
+        message: error.message
+      }
+    };
+  }
+} 

mcp-server/src/core/task-master-core.js

@@ -23,6 +23,7 @@ import { analyzeTaskComplexityDirect } from './direct-functions/analyze-task-com
 import { clearSubtasksDirect } from './direct-functions/clear-subtasks.js';
 import { expandAllTasksDirect } from './direct-functions/expand-all-tasks.js';
 import { removeDependencyDirect } from './direct-functions/remove-dependency.js';
+import { validateDependenciesDirect } from './direct-functions/validate-dependencies.js';
 
 // Re-export utility functions
 export { findTasksJsonPath } from './utils/path-utils.js';
@@ -46,7 +47,8 @@ export const directFunctions = new Map([
   ['analyzeTaskComplexityDirect', analyzeTaskComplexityDirect],
   ['clearSubtasksDirect', clearSubtasksDirect],
   ['expandAllTasksDirect', expandAllTasksDirect],
-  ['removeDependencyDirect', removeDependencyDirect]
+  ['removeDependencyDirect', removeDependencyDirect],
+  ['validateDependenciesDirect', validateDependenciesDirect]
 ]);
 
 // Re-export all direct function implementations
@@ -68,5 +70,6 @@ export {
   analyzeTaskComplexityDirect,
   clearSubtasksDirect,
   expandAllTasksDirect,
-  removeDependencyDirect
+  removeDependencyDirect,
+  validateDependenciesDirect
 }; 

mcp-server/src/tools/index.js

@@ -21,31 +21,41 @@ import { registerAnalyzeTool } from "./analyze.js";
 import { registerClearSubtasksTool } from "./clear-subtasks.js";
 import { registerExpandAllTool } from "./expand-all.js";
 import { registerRemoveDependencyTool } from "./remove-dependency.js";
+import { registerValidateDependenciesTool } from "./validate-dependencies.js";
 
 /**
  * Register all Task Master tools with the MCP server
  * @param {Object} server - FastMCP server instance
  */
 export function registerTaskMasterTools(server) {
-  registerListTasksTool(server);
+  logger.info("Registering Task Master tools with MCP server");
-  registerSetTaskStatusTool(server);
-  registerParsePRDTool(server);
-  registerUpdateTool(server);
-  registerUpdateTaskTool(server);
-  registerUpdateSubtaskTool(server);
-  registerGenerateTool(server);
-  registerShowTaskTool(server);
-  registerNextTaskTool(server);
-  registerExpandTaskTool(server);
-  registerAddTaskTool(server);
-  registerAddSubtaskTool(server);
-  registerRemoveSubtaskTool(server);
-  registerAnalyzeTool(server);
-  registerClearSubtasksTool(server);
-  registerExpandAllTool(server);
-  registerRemoveDependencyTool(server);
   
-  logger.info("Registered all Task Master tools with MCP server");
+  try {
+    // Register each tool
+    registerListTasksTool(server);
+    registerSetTaskStatusTool(server);
+    registerParsePRDTool(server);
+    registerUpdateTool(server);
+    registerUpdateTaskTool(server);
+    registerUpdateSubtaskTool(server);
+    registerGenerateTool(server);
+    registerShowTaskTool(server);
+    registerNextTaskTool(server);
+    registerExpandTaskTool(server);
+    registerAddTaskTool(server);
+    registerAddSubtaskTool(server);
+    registerRemoveSubtaskTool(server);
+    registerAnalyzeTool(server);
+    registerClearSubtasksTool(server);
+    registerExpandAllTool(server);
+    registerRemoveDependencyTool(server);
+    registerValidateDependenciesTool(server);
+    
+    logger.info("Successfully registered all Task Master tools");
+  } catch (error) {
+    logger.error(`Error registering Task Master tools: ${error.message}`);
+    throw error;
+  }
 }
 
 export default {

mcp-server/src/tools/validate-dependencies.js

@@ -0,0 +1,34 @@
+/**
+ * tools/validate-dependencies.js
+ * Tool for validating task dependencies
+ */
+
+import { z } from "zod";
+import {
+  handleApiResult,
+  createErrorResponse
+} from "./utils.js";
+import { validateDependenciesDirect } from "../core/task-master-core.js";
+
+/**
+ * Register the validateDependencies tool with the MCP server
+ * @param {Object} server - FastMCP server instance
+ */
+export function registerValidateDependenciesTool(server) {
+  server.addTool({
+    name: "validate_dependencies",
+    description: "Identify invalid dependencies in tasks without fixing them",
+    parameters: z.object({
+      file: z.string().optional().describe("Path to the tasks file"),
+      projectRoot: z.string().optional().describe("Root directory of the project (default: current working directory)")
+    }),
+    handler: async ({ file, projectRoot }, { logger }) => {
+      try {
+        const result = await validateDependenciesDirect({ file, projectRoot }, logger);
+        return handleApiResult(result);
+      } catch (error) {
+        return createErrorResponse(error);
+      }
+    }
+  });
+} 

tasks/task_023.txt

@@ -884,7 +884,7 @@ Analyze and refactor the project root handling mechanism to ensure consistent fi
 ### Details:
 
 
-## 41. Implement validate-dependencies MCP command [pending]
+## 41. Implement validate-dependencies MCP command [done]
 ### Dependencies: 23.31, 23.39, 23.40
 ### Description: Create MCP tool implementation for the validate-dependencies command
 ### Details:

tasks/tasks.json

@@ -1723,7 +1723,7 @@
           "title": "Implement validate-dependencies MCP command",
           "description": "Create MCP tool implementation for the validate-dependencies command",
           "details": "",
-          "status": "pending",
+          "status": "done",
           "dependencies": [
             "23.31",
             "23.39",