Antigravity

Prerequisites

• Antigravity installed
• A MailCraft API key with the scopes you want the agent to have — create one under Settings → API keys.

Setup

1. 1

   Open the MCP configuration

   In the agent panel open the … menu → MCP Servers → Manage MCP Servers → View raw config, and add:

   mcp_config.json Copy

   {
     "mcpServers": {
       "mailcraft": {
         "serverUrl": "https://mcp.mailcraft.host",
         "headers": {
           "Authorization": "Bearer sk_live_your_api_key"
         }
       }
     }
   }

   Replace sk_live_your_api_key with your key. The agent only gets the tools that key's scopes allow. Antigravity uses "serverUrl" for remote servers (not "url"), the same as Windsurf.

2. 2

   Restart Antigravity

   Reload the app, or refresh the MCP servers list, to load the configuration.

3. 3

   Verify the connection

   Ask the agent:

   antigravity Copy

   List all my MailCraft domains

Example prompts

Once connected, try asking Antigravity:

• Set up a sender for [email protected]
• Pause the "Onboarding" automation
• Show me my email metrics for the last 7 days

See every tool the agent can use in the MCP server reference.