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licenseNot graded
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maintenanceA stateless Model Context Protocol server that implements a simple echo functionality with resource, tool, and prompt components, enabling LLMs to echo back messages through standardized MCP interactions.
1
eve-mcp-handshake-repro
by devasur
eve MCP 연결: 도구 호출당 여섯 번의 HTTP 요청
vercel/eve를 위한 최소 재현 사례입니다. MCP 도구 호출을 한 번 하는 턴이 MCP 서버에 열한 번의 HTTP 요청을 보내며, 그중 하나가 도구 호출입니다.
mcp-server.mjs는 서버이자 계측 도구입니다. 하나의 echo 도구를 가진 상태 비저장(stateless) Streamable-HTTP MCP 서버를 구현하며, 수신하는 각 요청마다 한 줄씩 출력합니다.
실행하기
npm install
echo 'AI_GATEWAY_API_KEY=<your key>' > .env.local # or VERCEL_OIDC_TOKEN=…
node mcp-server.mjs # terminal 1
npx eve invoke "Echo the word marigold." # terminal 2Related MCP server: Copilot Studio MCP Server
터미널 1에 출력되는 내용
1 GET /mcp → 405 ← transport probe
2 POST /mcp initialize ┐ connection_search's client
3 POST /mcp notifications/initialized
4 GET /mcp → 405 │
5 POST /mcp tools/list ┘
6 GET /mcp → 405 ┐ the tool call's client — a new one
7 POST /mcp initialize │
8 POST /mcp notifications/initialized
9 GET /mcp → 405 │
10 POST /mcp tools/list │
11 POST /mcp tools/call ┘기대하는 동작
도구 호출 한 번은 tools/call 한 번과 세션에 걸쳐 상각되는 핸드셰이크만을 필요로 해야 합니다. 워크플로 단계마다 새로운 initialize + notifications/initialized + tools/list가 발생하거나, 서버가 이미 POST에 응답했는데도 그 전에 매번 GET 프로브를 보내는 방식이어서는 안 됩니다.
eve 0.44.3, Node 24, Linux에서 기록했습니다. 동일한 열한 개 요청 패턴은 프로덕션 MCP 서버를 대상으로 한 0.34.0에서 처음 확인되었으며, 해당 환경에서는 각 요청이 루프백이 아닌 서버리스 왕복 비용을 발생시킵니다.
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