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kdaehun00

Unit Expert MCP

by kdaehun00
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Python
Remote

Unit Expert MCP

Minimal Streamable HTTP MCP server for PlayMCP.

PlayMCP Settings

MCP 이름: Unit Expert(단위전문가)
MCP 식별자: unitExpert
MCP URL: https://unit-expert-mcp.onrender.com/mcp
인증: 없음

Related MCP server: Unit Converter AI MCP Server

HTTP Endpoints

GET  /
GET  /healthz
POST /mcp
GET  /mcp
GET  /scenario
POST /scenario

POST /mcp expects JSON-RPC with:

Accept: application/json, text/event-stream
Content-Type: application/json

Tools

  • convert_length

  • convert_weight

  • convert_temperature

  • convert_area

  • convert_volume

  • list_supported_units

Scenario Control

Open /scenario in a browser to set the server-wide default scenario. The page also shows a live /mcp response preview for the selected scenario.

Use X-MCP-Test-Scenario to override the server-wide state for one request. Omit it for the currently selected scenario.

The selected scenario is stored in process memory, so it resets to ok after a server restart or redeploy.

X-MCP-Test-Scenario: duplicate-tool-name

지원 시나리오:

기본

정책명

시나리오

효과

정상 응답

ok

정상 Unit Expert 도구 목록을 반환합니다.

서버 error

정책명

시나리오

효과

인증 조건 - 401

auth-401

JSON-RPC 처리 전에 401 Unauthorized를 반환합니다.

인증 조건 - 403

auth-403

JSON-RPC 처리 전에 403 Forbidden을 반환합니다.

MCP 버전 조건 - 최소 지원 버전

unsupported-min-version

최소 지원 버전보다 낮은 protocolVersion: 2024-11-05를 반환합니다.

툴 목록 조건 - JSON-RPC 에러

tools-list-error

tools/list에서 JSON-RPC error를 반환합니다.

툴 목록 조건 - null 반환

tools-list-null

tools/list에서 tools: null을 반환합니다.

툴 목록 조건 - 빈 배열 반환

tools-list-empty

tools/list에서 tools: []를 반환합니다.

툴 개수 조건 - 최대 개수

too-many-tools

도구 21개를 반환합니다.

응답속도 조건 - 지연

delayed-response

OPTIONS가 아닌 /mcp 요청을 5초 지연시킵니다.

tool error

정책명

시나리오

효과

툴 이름 조건 - 중복

duplicate-tool-name

동일한 name을 가진 중복 tool을 반환합니다.

툴 이름 조건 - 허용 문자

invalid-tool-name-char

허용되지 않는 문자가 포함된 tool name을 반환합니다.

툴 이름 조건 - 길이

invalid-tool-name-length

129자 길이의 tool name을 반환합니다.

툴 필수 속성 - name

missing-name

name이 없는 tool을 반환합니다.

툴 필수 속성 - description

missing-description

description이 없는 tool을 반환합니다.

툴 필수 속성 - inputSchema

missing-input-schema

inputSchema가 없는 tool을 반환합니다.

툴 필수 속성 - annotations

missing-annotations

annotations가 없는 tool을 반환합니다.

툴 이름 조건 - 금지어

forbidden-kakao-name

금지어가 포함된 tool name을 반환합니다.

툴 설명 조건 - 길이

long-description

1,051자 description을 반환합니다.

툴 설명 조건 - 서비스명

missing-service-name-in-description

서비스명이 빠진 description을 반환합니다.

툴 annotations 조건 - 필수 힌트

incomplete-annotations

필수 필드가 빠진 annotations를 반환합니다.

Run Locally

PYTHONPATH=src PORT=8000 python -m unit_expert_mcp.server

Smoke test:

curl -i -X POST http://localhost:8000/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -H 'MCP-Protocol-Version: 2025-03-26' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"curl","version":"1.0"}}}'

Official SDK 2026 Baseline

The existing unit_expert_mcp.server implementation is the fault-injection server used for 2025/legacy and intentionally invalid scenarios. For a clean 2026-07-28 baseline backed by the official MCP Python SDK, run the separate entrypoint:

pip install ".[sdk2026]"
PYTHONPATH=src PORT=8000 python -m unit_expert_mcp.sdk_2026_server

This starts a Streamable HTTP MCP endpoint at /mcp using the SDK's ASGI app. It exposes the same six Unit Expert tools, but does not implement the scenario UI or malformed-response cases.

Expected Render endpoint:

https://unit-expert-mcp-2026.onrender.com/mcp

Docker:

docker build -f Dockerfile.sdk2026 -t unit-expert-mcp-sdk2026 .
docker run --rm -p 8000:8000 unit-expert-mcp-sdk2026

Test

PYTHONPATH=src python3 -m unittest discover -s tests -p 'test*.py'

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.

No tool schema history has been recorded yet.

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