Code-MCP

Instructions

Implementation Reference

• src/tools/memory.ts:61-67 (handler)

  The handler function that implements the core logic of the 'read_memory' tool. It reads the persistent memory JSON file, retrieves the value by key, and returns it formatted as JSON or a 'not found' message.

  export async function readMemoryHandler(args: any) {
      await ensureMemoryFile();
      const data = JSON.parse(await fs.readFile(MEMORY_FILE, "utf-8"));
      const item = data[args.key];
      if (!item) return { content: [{ type: "text", text: "Key not found." }] };
      return { content: [{ type: "text", text: JSON.stringify(item, null, 2) }] };
  }

• src/tools/memory.ts:27-33 (schema)

  The Zod schema definition for the 'read_memory' tool, specifying the input parameters (key) and metadata.

  export const readMemorySchema = {
      name: "read_memory",
      description: "Read a value from persistent memory by key.",
      inputSchema: z.object({
          key: z.string().describe("Key to retrieve")
      })
  };

• src/index.ts:90-90 (registration)

  Registration of the 'read_memory' tool in the main stdio server's tool registry map, associating the schema and handler.

  ["read_memory", { schema: readMemorySchema, handler: readMemoryHandler }],

• src/server.ts:99-99 (registration)

  Registration of the 'read_memory' tool in the HTTP server's tool registry map, associating the schema and handler.

  ["read_memory", { schema: readMemorySchema, handler: readMemoryHandler }],

• src/tools/memory.ts:9-15 (helper)

  Helper function used by readMemoryHandler to ensure the memory file exists before reading.

  async function ensureMemoryFile() {
      try {
          await fs.access(MEMORY_FILE);
      } catch {
          await fs.writeFile(MEMORY_FILE, JSON.stringify({}, null, 2));
      }
  }