@ag-ui/antigravity

TypeScript client for Google Antigravity agents exposed over the AG-UI protocol.

All translation happens on the Python side (ag_ui_antigravity), so this is a thin HttpAgent plus capability discovery.

npm install @ag-ui/antigravity

import { AntigravityAgent } from "@ag-ui/antigravity";

const agent = new AntigravityAgent({ url: "http://localhost:8009/agentic_chat" });

const capabilities = await agent.getCapabilities();
// { tools: { supported: true, clientProvided: true },
//   humanInTheLoop: { supported: true, interrupts: true }, ... }

getCapabilities() fetches <url>/capabilities and validates the response against AgentCapabilitiesSchema, throwing on a malformed payload. Override capabilitiesUrl() or capabilitiesRequestInit() to customize the URL or auth.

See the Python package for the server, the event mapping, and the human-in-the-loop design.