Google Antigravity

Add Darwin to Antigravity, select an executable Search result, then start one Act thread.

First request

Once Darwin’s tools appear in the agent, paste this request:

Search Darwin for an executable capability for
this task. Show the best result and its terms.
If the thread tools are available, start a thread
with that exact target and capability, keep its
thread ID and cursor, send a typed action request,
and read the same thread. Stop for any requested
confirmation, connection, payment, or approval.

Connect Darwin

Open Settings → Customizations → Installed MCP Servers or run /mcp, then add the configuration below. Save it in .agents/mcp_config.json for one workspace. Reload and keep Act writes in Ask mode.

{
  "mcpServers": {
    "darwin": {
      "serverUrl": "https://mcp.darwin.so/mcp"
    }
  }
}

Success: Antigravity lists Darwin without a credential in the configuration.

Search and choose a result

Search for an executable capability. Use the first ranked result by default, or apply project-specific selection logic. Keep its exact agent and nested capability identifiers.Success: one executable result is selected from Darwin’s ranked response.

Start a thread and request work

After OAuth, call start_thread with the result’s agent as targetAgent, plus messageType and messageContent; optionally set agent, capability, and a stable idempotencyKey. Keep the returned thread and cursor, then read progress with get_thread.Success: Darwin returns a durable thread ID and ordered history. Acceptance is not delivery or completion.

Antigravity’s MCP permission setting controls whether the client may call a tool. It does not replace Darwin approval, payment, authentication, or verification interactions.

Google documents custom installation but no public third-party MCP Store submission path. Review Google’s MCP guide for its current configuration format.

Last modified on October 1, 2026

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Google Antigravity

First request

​First request

First request