mcp example, mock i/o for client-to-server communications

packages/api/src/mcp/add.ts

@@ -0,0 +1,81 @@
+import { Request, Response } from 'express';
+import { logger } from '@librechat/data-schemas';
+
+interface CreateToolRequest extends Request {
+  body: {
+    name: string;
+    description: string;
+    type: 'function' | 'code_interpreter' | 'file_search';
+    metadata?: Record<string, unknown>;
+  };
+  user?: {
+    id: string;
+  };
+}
+
+/**
+ * Add a new tool to the system
+ * @route POST /agents/tools/add
+ * @param {object} req.body - Request body containing tool data
+ * @param {string} req.body.name - Tool name
+ * @param {string} req.body.description - Tool description
+ * @param {string} req.body.type - Tool type (function, code_interpreter, file_search)
+ * @param {object} [req.body.metadata] - Optional metadata
+ * @returns {object} Created tool object
+ */
+export const addTool = async (req: CreateToolRequest, res: Response) => {
+  try {
+    const { name, description, type, metadata } = req.body;
+
+    // Log the incoming request for development
+    logger.info(
+      'Add Tool Request:' +
+        JSON.stringify({
+          name,
+          description,
+          type,
+          metadata,
+          userId: req.user?.id,
+        }),
+    );
+
+    // Validate required fields
+    if (!name || !description || !type) {
+      return res.status(400).json({
+        error: 'Missing required fields: name, description, and type are required',
+      });
+    }
+
+    // Validate tool type
+    const validTypes = ['function', 'code_interpreter', 'file_search'];
+    if (!validTypes.includes(type)) {
+      return res.status(400).json({
+        error: `Invalid tool type. Must be one of: ${validTypes.join(', ')}`,
+      });
+    }
+
+    // For now, return a mock successful response
+    // TODO: Implement actual tool creation logic
+    const mockTool = {
+      id: `tool-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
+      type,
+      function: {
+        name,
+        description,
+      },
+      metadata: metadata || {},
+      created_at: new Date().toISOString(),
+      updated_at: new Date().toISOString(),
+    };
+
+    logger.info('Tool created successfully:' + JSON.stringify(mockTool));
+
+    res.status(201).json(mockTool);
+  } catch (error) {
+    logger.error('Error adding tool:', error);
+    res.status(500).json({
+      error: 'Internal server error while adding tool',
+      message: error instanceof Error ? error.message : 'Unknown error',
+    });
+  }
+};