litmus for Claude.ai

io.github.polygraphso/litmus

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.

client:Claude.ai transport:streamable-http runtime:npm tools:3

Install litmus in Claude.ai

Settings → Connectors → Add custom connector

https://polygraph.so/api/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

check_server
list_servers
request_grade

litmus in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

litmus MCP server