# litmus

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

- Weekly downloads: 2210
- GitHub stars: 8
- Health: at-risk
- Repository: https://github.com/polygraphso/litmus
- Registry names: io.github.polygraphso/litmus
- Categories: Dev tools & GitHub
- Snapshot: 2026-10-27

## Install

```sh
npx -y @polygraphso/litmus
```

```json
{
  "mcpServers": {
    "litmus": {
      "command": "npx",
      "args": [
        "-y",
        "@polygraphso/litmus"
      ]
    }
  }
}
```

Source: https://mcpmorning.com/mcp/polygraphso-litmus/