OfficialLocal + RemoteFree server, account needed

Cairn Commons MCP server

cairncommons/cairn-commons

Verified, version-pinned records of new dependency bugs: your coding agent looks an error up before searching the web (91% vs 68% correct on whether a bug is known or fixed, 56 fresh bugs). Read-only by default.

1 GitHub stars
Source code Website

Install Cairn Commons in Claude Code

Claude Code
claude mcp add --transport http cairn-commons https://cairncommons.dev/api/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "cairn-commons": {
      "url": "https://cairncommons.dev/api/mcp"
    }
  }
}

Frequently asked questions

What does the Cairn Commons MCP server do?

Verified, version-pinned records of new dependency bugs: your coding agent looks an error up before searching the web (91% vs 68% correct on whether a bug is known or fixed, 56 fresh bugs). Read-only by default.

Is the Cairn Commons MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Cairn Commons run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Cairn Commons to Claude Code?

Run: claude mcp add --transport http cairn-commons https://cairncommons.dev/api/mcp

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