Install into Cursor

Click Add to Cursor to install in one click: Cursor opens and asks you to confirm the server, then writes it to your mcp.json for you.

Prefer to do it by hand? Add the JSON below to .cursor/mcp.json (project scope) or ~/.cursor/mcp.json(global scope), or use the Settings > MCP UI: add a new server, point it at the command below, and toggle it on. No API key goes in the config, and you do not need an account to start: a fresh install includes 25 free calls.

{
  "mcpServers": {
    "reflex": {
      "command": "npx",
      "args": [
        "-y",
        "reflex-browser@latest",
        "mcp"
      ]
    }
  }
}

After saving, Cursor shows the Reflex server toggled on in Settings > MCP, with its tools listed.

Ask your agent to run reflex_auth with action: "login" to sign in (opens your browser, saves a key locally). For CI or headless setups, add REFLEX_API_KEY to the env block instead.

Platform note: macOS is supported today; Windows is in beta (see troubleshooting).