Codex MCP Server

Instructions

Implementation Reference

• src/tools/simple-tools.ts:17-21 (handler)

  The execute function for the ping tool, which returns the input prompt or defaults to 'Pong!'.

  execute: async (args, onProgress) => {
    const message = args.prompt || args.message || 'Pong!';
    // Return message directly to avoid cross-platform issues with echo command
    return message as string;
  },

• src/tools/simple-tools.ts:5-7 (schema)

  Zod schema defining the input arguments for the ping tool: an optional prompt string.

  const pingArgsSchema = z.object({
    prompt: z.string().default('').describe('Message to echo '),
  });

• src/tools/index.ts:11-21 (registration)

  Registration of the pingTool by adding it to the toolRegistry array.

  toolRegistry.push(
    askCodexTool,
    batchCodexTool,
    // reviewCodexTool,
    pingTool,
    helpTool,
    versionTool,
    brainstormTool,
    fetchChunkTool,
    timeoutTestTool
  );