Prompt Cleaner MCP Server

Instructions

Implementation Reference

• src/tools.ts:87-91 (handler)

  The core handler logic for the 'health-ping' tool. It creates an output object { ok: true }, logs the execution time, and returns it formatted as JSON content.

  case "health-ping": {
    const out = { ok: true } as const;
    logger.info("health.ping", { elapsed_ms: Date.now() - start });
    return jsonContent(out);
  }

• src/tools.ts:75-79 (registration)

  Tool registration in listTools(): defines name, description, and input schema (empty object) for 'health-ping'.

  {
    name: "health-ping",
    description: "Liveness probe; returns { ok: true }",
    inputSchema: { type: "object", properties: {} },
  },

• src/tools.ts:78-78 (schema)

  Input schema definition for 'health-ping': accepts an empty object.

  inputSchema: { type: "object", properties: {} },

• src/server.ts:24-27 (registration)

  MCP server registration for listing tools, which includes 'health-ping' via listTools().

  server.setRequestHandler(ListToolsRequestSchema, async () => {
    logger.info("tools.list", {});
    return { tools: listTools() };
  });

• src/server.ts:29-39 (registration)

  MCP server registration for calling tools, which dispatches to the 'health-ping' handler via callTool.

  server.setRequestHandler(CallToolRequestSchema, async (request) => {
    const name = request.params.name;
    const args = request.params.arguments ?? {};
    const requestId = (args as any)?.requestId || randomUUID();
    const withRid = { ...(args as any), requestId };
    logger.info("tools.call.start", { name, request_id: requestId });
    const res: any = await callTool(name, withRid);
    logger.info("tools.call.done", { name, request_id: requestId });
    // Return MCP-spec content unchanged (including json type when present)
    return res;
  });