How to install fortress in Gemini CLI

Stealth browser for AI agents: fetch pages behind Cloudflare/DataDome/CAPTCHA, extract clean data.

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Steps

1Install uv (for uvx): https://docs.astral.sh/uv/
2Open ~/.gemini/settings.json (or .gemini/settings.json in your project)
3Add the entry below. If the file already has "mcpServers", add just the inner entry
4Restart Gemini CLI and run /mcp to confirm

Configuration

~/.gemini/settings.json

{
  "mcpServers": {
    "fortress": {
      "command": "uvx",
      "args": [
        "tilion"
      ]
    }
  }
}

Environment variable	Required	What it is
TILION_MCP_PREWARM	No	Boot the browser at startup so the first tool call is instant (default 1).
TILION_MCP_HEADLESS	No	Set 0 to show a visible browser window (default 1).
TILION_ALLOW_PRIVATE_EGRESS	No	Set 1 to allow tools to reach localhost / private IPs (SSRF guard off).
TILION_BASE_URL	No	Run browsers on a hosted Tilion server instead of locally.
TILION_API_KEYsecret	No	Bearer key for the hosted Tilion server (cloud mode only).

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