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How to Connect Antigravity (Google Gemini) to CoCoCo

Before you start

Antigravity installed
Your Endpoint URL and an active API Token from the MCP Connection page (see How to Find Your MCP Connection Details)

Step 1 — Open the MCP config

The reliable way is from the IDE (the file path differs between versions): open the … (Additional Options) menu in the Agent panel → MCP Servers → Manage MCP Servers → View raw config. This opens mcp_config.json.

Step 2 — Add the CoCoCo server

{
  "mcpServers": {
    "cococo": {
      "serverUrl": "https://<your-domain>/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_TOKEN" }
    }
  }
}

Important: Antigravity uses serverUrl (not url) for remote HTTP MCP servers — this differs from Cursor and Claude. Replace YOUR_API_TOKEN with your CoCoCo token.

Step 3 — Reload and verify

Save the file, then close and reopen Antigravity (or click Refresh under Installed MCP Servers in Settings → Customizations). Ask the agent what CoCoCo tools it has access to, or check the MCP Servers list.

Troubleshooting

Won’t connect with url****: remote servers need serverUrl in Antigravity — using url silently fails.
Still not connecting: re-check the URL and that the token hasn’t been revoked, then reopen Antigravity.
Authentication errors: confirm the token is active.

How to Find Your MCP Connection Details