Implement validate-dependencies MCP command for checking dependency validity

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);
+      }
+    }
+  });
+}