MentionsAPI MCP for Cursor

Cursor supports MCP servers via .cursor/mcp.json. Add the mentionsapi server and your composer gets mentions_check + the rest as native tools.

1. Get an API key

Mint at /app/keys. Project-scoped keys (one per workspace) are easier to rotate.

2. Add the MCP server

Create or edit .cursor/mcp.json in your project root:

json

// .cursor/mcp.json (project-scoped) — or ~/.cursor/mcp.json (global)
{
  "mcpServers": {
    "mentionsapi": {
      "command": "npx",
      "args": ["-y", "@mentionsapi/mcp@latest"],
      "env": {
        "MENTIONSAPI_API_KEY": "lvk_live_..."
      }
    }
  }
}

3. Restart + verify

Cursor watches .cursor/mcp.json live, but a full restart is the cleanest way to bootstrap. After restart, ask the composer: "Use the mentionsapi tool to check if Notion is mentioned in 'best note-taking app'." The composer should call mentions_check automatically.

Privacy note

MCP servers run locally and proxy to our API over HTTPS. Cursor never uploads your API key to any third-party server beyond the MentionsAPI endpoint you call. The npx-installed package is open source — see github.com/mentionsapi/mcp (V2: planned).