Signalint MCP Server: Install & Setup

Install Signalint in Claude Code

Claude Code

claude mcp add signalint -- npx -y signalint-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "signalint": {
      "command": "npx",
      "args": [
        "-y",
        "signalint-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Signalint MCP server do?

Compact JavaScript/TypeScript diagnostics: clusters and prioritizes Oxlint, tsc and Biome issues, caches results and detects recurring diagnostic loops.

Is the Signalint MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Signalint run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Signalint to Claude Code?

Run: claude mcp add signalint -- npx -y signalint-mcp

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