Roo Code Memory Bank MCP Server

Instructions

Implementation Reference

• src/index.ts:153-163 (handler)

  The handler function that checks the memory-bank directory existence and lists .md files within it, returning JSON status.

  async checkMemoryBankStatus(): Promise<{ content: Array<{ type: string; text: string }>; isError?: boolean }> {
     try {
        await fs.access(MEMORY_BANK_PATH);
        const files = await fs.readdir(MEMORY_BANK_PATH);
        const mdFiles = files.filter(f => f.endsWith('.md'));
        return { content: [{ type: "text", text: JSON.stringify({ exists: true, files: mdFiles }, null, 2) }] };
     } catch (error) {
        // If access fails, directory likely doesn't exist
        return { content: [{ type: "text", text: JSON.stringify({ exists: false, files: [] }, null, 2) }] };
     }
  }

• src/index.ts:268-269 (registration)

  Switch case in CallToolRequestHandler that registers and dispatches the tool call to the handler.

  case "check_memory_bank_status":
    return memoryBankServer.checkMemoryBankStatus();

• src/index.ts:63-68 (schema)

  Tool definition including name, description, and input schema (empty object since no input params required).

  const CHECK_MEMORY_BANK_STATUS_TOOL: Tool = {
    name: "check_memory_bank_status",
    description: "Checks if the memory-bank directory exists and lists the .md files within it.",
    inputSchema: { type: "object", properties: {} } // No input needed
    // Output: { exists: boolean, files: string[] } (handled in implementation)
  };

• src/index.ts:110-115 (registration)

  Array of all tools including CHECK_MEMORY_BANK_STATUS_TOOL, used for listing tools.

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