"npm" matching MCP connectors:

Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm.

Read recorded npm loading evidence across pinned Node.js, Bun and Deno runtimes.

Check if your MCP server is ready to publish on the MCP Registry, Smithery, or npm.

litmusA

io.github.polygraphso

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