MCP System Information Server

An MCP server that provides system information, such as CPU and memory usage.

Model Context Protocol (MCP) сервер для получения системной информации (CPU и память).

https://modelcontextprotocol.io/specification/2025-03-26/basic/transports#streamable-http

https://levelup.gitconnected.com/mcp-server-and-client-with-sse-the-new-streamable-http-d860850d9d9d

Сервер использует структурированное логгирование с помощьюzerologс поддержкой следующих переменных окружения:

ENVIRONMENT=development LOG_LEVEL=debug ./system-info-server

ENVIRONMENT=production LOG_LEVEL=info ./system-info-server

# Минимальное логгирование для продакшена ENVIRONMENT=production LOG_LEVEL=error PORT=8080 ./system-info-server # Максимальная детализация для отладки ENVIRONMENT=development LOG_LEVEL=trace ./system-info-server # Стандартная конфигурация для разработки LOG_LEVEL=debug ./system-info-server

14:30:25 INF Starting Fiber server component=main port=8080 addr=:8080 14:30:30 INF Request started component=http method=POST path=/ session_id=session_20240614_143030_abc12345 14:30:30 DBG Processing JSON-RPC request component=mcp method=initialize session_id=session_20240614_143030_abc12345

{"level":"info","time":"2024-06-14T14:30:25+03:00","caller":"main.go:65","component":"main","port":"8080","addr":":8080","message":"Starting Fiber server"} {"level":"info","time":"2024-06-14T14:30:30+03:00","caller":"middleware/logging.go:35","component":"http","method":"POST","path":"/","session_id":"session_20240614_143030_abc12345","message":"Request started"}

{ "mcpServers": { "system-info-local": { "command": "/path/to/system-info-server", "args": [] } } }

Вариант 2: Remote Streamable HTTP (новая спецификация 2025-03-26)

{ "mcpServers": { "system-info-remote": { "url": "https://your-domain.com/" } } }

Вариант 3: Legacy HTTP+SSE (для обратной совместимости)

{ "mcpServers": { "system-info-legacy": { "url": "https://your-domain.com/sse" } } }

При добавлении MCP сервера в n8n укажите:

Legacy формат (для обратной совместимости)

При добавлении MCP сервера в n8n укажите:

- SSE Endpoint:https://your-domain.com/sse

Streamable HTTP API (новая спецификация 2025-03-26)

POST / Content-Type: application/json Accept: application/json, text/event-stream { "jsonrpc": "2.0", "id": 1, "method": "initialize", "params": { "protocolVersion": "2025-03-26", "capabilities": {}, "clientInfo": { "name": "client-name", "version": "1.0.0" } } }

Ответ содержит заголовокMcp-Session-Id, который нужно использовать во всех последующих запросах.

POST / Content-Type: application/json Accept: application/json Mcp-Session-Id: <session-id> { "jsonrpc": "2.0", "id": 2, "method": "tools/list" }

POST / Content-Type: application/json Accept: application/json Mcp-Session-Id: <session-id> { "jsonrpc": "2.0", "id": 3, "method": "tools/call", "params": { "name": "get_system_info", "arguments": {} } }

GET / Accept: text/event-stream Mcp-Session-Id: <session-id>

POST / Content-Type: application/json Accept: text/event-stream Mcp-Session-Id: <session-id> { "jsonrpc": "2.0", "id": 4, "method": "tools/call", "params": { "name": "get_system_info", "arguments": {} } }

DELETE / Mcp-Session-Id: <session-id>

Legacy HTTP API (для обратной совместимости)

POST /sse Content-Type: application/json { "jsonrpc": "2.0", "id": 1, "method": "initialize", "params": { "protocolVersion": "2024-11-05", "capabilities": {}, "clientInfo": { "name": "client-name", "version": "1.0.0" } } }

GET /sse?sessionId=<session-id> Accept: text/event-stream

# HTTP режим docker run -p 8080:8080 -e PORT=8080 mcp-system-info # stdio режим docker run -it mcp-system-info

При развертывании за nginx добавьте в конфигурацию:

# Для нового Streamable HTTP endpoint location / { proxy_pass http://localhost:8080; proxy_http_version 1.1; proxy_set_header Connection ""; proxy_buffering off; proxy_cache off; proxy_set_header X-Accel-Buffering no; proxy_read_timeout 86400; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } # Для Legacy SSE endpoint (обратная совместимость) location /sse { proxy_pass http://localhost:8080/sse; proxy_http_version 1.1; proxy_set_header Connection ""; proxy_buffering off; proxy_cache off; proxy_set_header X-Accel-Buffering no; proxy_read_timeout 86400; }

Streamable HTTP (2025-03-26) vs Legacy HTTP+SSE (2024-11-05)

- Единый endpoint для всех операций
- POST и GET методы на одном маршруте
- ПоддержкаAccept: application/json, text/event-stream
- Session Management черезMcp-Session-Idзаголовок
- Resumable streams сLast-Event-Id
- DELETE для явного завершения сессии

- Отдельные endpoints для POST и SSE
- Событиеendpointпри подключении к SSE
- ПараметрsessionIdв query string
- Старый формат событий SSE

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