server.setRequestHandler(
  ListToolsRequestSchema,
  async () => ({
    tools: [{
      name: "service_action_name",
      description: "ツールの説明文",
      inputSchema: {
        type: "object",
        properties: {
          param1: {
            type: "string",
            description: "パラメータ1の説明"
          },
          // 他のパラメータ...
        },
        required: ["param1"]
      }
    }]
  })
);

// ツール呼び出しハンドラー
server.setRequestHandler(
  CallToolRequestSchema,
  async (request) => {
    switch (request.params.name) {
      case "service_action_name":
        return await handleAction(request.params.arguments);
      default:
        return { content: [{ type: "text", text: "未知のツール" }], isError: true };
    }
  }
);