Roo Code Memory Bank MCP Server

Instructions

Implementation Reference

• src/index.ts:165-178 (handler)

  The handler function in RooMemoryBankServer class that reads the content of the specified memory bank file and returns it as JSON.

  async readMemoryBankFile(input: any): Promise<{ content: Array<{ type: string; text: string }>; isError?: boolean }> {
    const fileName = input?.file_name;
    if (!fileName || typeof fileName !== 'string') {
      return { content: [{ type: "text", text: JSON.stringify({ status: "error", message: "Missing or invalid 'file_name' parameter." }, null, 2) }], isError: true };
    }
    const filePath = path.join(MEMORY_BANK_PATH, fileName);
    try {
      const fileContent = await fs.readFile(filePath, 'utf-8');
      return { content: [{ type: "text", text: JSON.stringify({ content: fileContent }, null, 2) }] };
    } catch (error: any) {
      console.error(chalk.red(`Error reading file ${fileName}:`), error);
      return { content: [{ type: "text", text: JSON.stringify({ status: "error", message: `Failed to read file ${fileName}: ${error.message}` }, null, 2) }], isError: true };
    }
  }

• src/index.ts:70-84 (schema)

  Tool schema definition including name, description, and input schema with required 'file_name' parameter.

  const READ_MEMORY_BANK_FILE_TOOL: Tool = {
    name: "read_memory_bank_file",
    description: "Reads the full content of a specified memory bank file.",
    inputSchema: {
      type: "object",
      properties: {
        file_name: {
          type: "string",
          description: "The name of the memory bank file (e.g., 'productContext.md')"
        }
      },
      required: ["file_name"]
    }
    // Output: { content: string } (handled in implementation)
  };

• src/index.ts:110-115 (registration)

  Registers the tool by including it in the ALL_TOOLS array, used for listing available tools via ListToolsRequestHandler.

  const ALL_TOOLS = [
    INITIALIZE_MEMORY_BANK_TOOL,
    CHECK_MEMORY_BANK_STATUS_TOOL,
    READ_MEMORY_BANK_FILE_TOOL,
    APPEND_MEMORY_BANK_ENTRY_TOOL
  ];

• src/index.ts:270-271 (registration)

  Registers the tool call handler by dispatching to the readMemoryBankFile method in the CallToolRequestSchema switch statement.

  case "read_memory_bank_file":
    return memoryBankServer.readMemoryBankFile(args);