Quick setup
- In Antigravity, click … at the top of the agent side panel and select MCP Servers.
- Click Manage MCP Servers, then View raw config to open
mcp_config.json(global at~/.gemini/config/mcp_config.json, or.agents/mcp_config.jsonin your workspace). - Add the Firecrawl server and save:
- Open Agent settings (
Cmd/Ctrl + ,), go to Customizations, and click Authenticate next tofirecrawl. - Sign in to Firecrawl in your browser and approve a team, then paste the authorization code back into Antigravity and click Submit.
- Confirm that Firecrawl’s tools, such as
firecrawl_searchandfirecrawl_scrape, are available.
serverUrl key for remote servers. Entries that use url or httpUrl do not register. Antigravity CLI reads the same file; type /mcp in the CLI to check the server’s status.
Prefer an API key?
Prefer an API key?
For unattended use, create a Firecrawl API key and send it as a header instead of signing in. See Add an API key for details.
Try it
Troubleshooting
- Server shows as failed: confirm the entry uses
serverUrlwith exactlyhttps://mcp.firecrawl.dev/v2/mcp-oauth, then reload the server from Manage MCP Servers or the CLI’s/mcpmanager. - Sign-in is required or expires: click Authenticate next to
firecrawlin Customizations again. - Another Firecrawl connection already exists: update the existing server to the OAuth URL and sign in so only one Firecrawl server is active.

