Connect atbridge.ai to Antigravity

Google Antigravity — both the IDE and the CLI — reaches atbridge.ai over MCP. Point it at atbridge.ai once and its agent can search, draft, and file mail while you work.

If you haven’t installed atbridge.ai yet, start with Install atbridge.ai. New to how this works? See How your AI connects.

The one-click way

In Thunderbird, open the atbridge.ai extension’s Settings → Connect your AI (MCP). Next to Antigravity, hit Set up — atbridge writes the config for you. Tick “Allow writes” first if you want the AI to send / draft / edit mail (it’s read-only by default).

Or from a terminal:

atbridge mcp setup --client antigravity
# add --allow-writes to unlock send / draft / edit

Or add it by hand

Antigravity’s IDE and CLI share one MCP config:

macOS / Linux

~/.gemini/config/mcp_config.json

Windows

%USERPROFILE%\.gemini\antigravity\mcp_config.json

Add the atbridge.ai entry to its mcpServers block:

mcp_config.json

{
  "mcpServers": {
    "atbridge.ai": {
      "command": "atbridge",
      "args": ["mcp"]
    }
  }
}

To let the AI send / draft / edit mail (read-only otherwise), add an env block:

"atbridge.ai": {
  "command": "atbridge",
  "args": ["mcp"],
  "env": { "ATBRIDGE_ALLOW_WRITES": "1" }
}

Inside Antigravity you can open the same file from the ⋯ menu at the top of the agent panel → Manage MCP Servers → View raw config.

Refresh & try it

Save the file, hit refresh in Antigravity’s Installed MCP Servers panel (or restart it), and ask:

List the 5 most recent emails in my Thunderbird inbox.

If you see a list, you’re done.

Notatka

atbridge must be on your PATH. If the tools don’t appear, use the absolute path as the command — the same fix as for Claude Desktop. The bridge only answers while Thunderbird is running.

Where to go next

• Try a recipe