Memory MCP Server

Instructions

Implementation Reference

• src/handlers/ToolHandlers.ts:243-256 (handler)

  The main handler logic for the 'get_long_term_memory' tool. It validates the userId argument, retrieves the long-term memory using memoryStore, and returns it as a JSON-formatted text response.

  case "get_long_term_memory": {
    const { userId } = request.params.arguments as any;
    
    // Validate inputs
    ValidationUtils.validateUserId(userId);
    
    const memory = memoryStore.getLongTermMemory(userId);
    return {
      content: [{
        type: "text",
        text: JSON.stringify(memory, null, 2)
      }]
    };
  }

• src/handlers/ToolHandlers.ts:92-105 (registration)

  The tool registration entry in the ListTools handler, including name, description, and input schema specification.

  {
    name: "get_long_term_memory",
    description: "Retrieve long-term memory for a user",
    inputSchema: {
      type: "object",
      properties: {
        userId: {
          type: "string",
          description: "User identifier"
        }
      },
      required: ["userId"]
    }
  },

• src/handlers/ToolHandlers.ts:95-104 (schema)

  The input schema defining the expected arguments for the 'get_long_term_memory' tool: a required userId string.

  inputSchema: {
    type: "object",
    properties: {
      userId: {
        type: "string",
        description: "User identifier"
      }
    },
    required: ["userId"]
  }

• src/store/MemoryStore.ts:139-141 (helper)

  The core helper method in MemoryStore that retrieves the long-term memory data for a user from the internal Map.

  getLongTermMemory(userId: string): LongTermMemory | null {
    return this.longTermMemory.get(userId) || null;
  }