Build your own Google Antigravity agent in Slack

In the world of project management and team collaboration, the holy grail is reducing friction. Previously, we looked at how to make Trello cards talk back The Power of Gemini inside Trello and how to bring Gemini into your workspace Gemini in your Slack workspace . But what if you wanted a highly intelligent, stateful team assistant living directly in Slack that could answer complex, open-ended questions about your Trello boards? Questions like: "Which cards did I edit last week?" "Show me all comments made across my active boards in the last 7 days." "What is the current status of the card XYZ?" Answering these questions requires more than simple semantic search; it requires a tool that can dynamically write retrieval scripts, parse complex multi-board JSON payloads, filter dates, and compile elegant reports. In this article, we'll explore how to build exactly that using Google’s Antigravity Managed Agent (the "Agy" agent) , integrated into Slack's native Agent View , utilizing a secure, stateful, and sandboxed remote execution environment. 🚀 Prerequisites Before starting, make sure you have: A Google AI API Key with Gemini / Antigravity access A Trello Account (with an API Key and Token for read-only board queries) A Slack Workspace (with App Admin privileges to create a Socket Mode app) Node.js (v24+) and pnpm (v11+) installed 🔒 Security & Environment Controls: The Agy Sandbox Philosophy At the heart of this setup is Google's Antigravity (Agy) Managed Agent . Instead of running in a transient stateless environment, the Agy agent operates inside a persistent, secure, and remote Linux sandbox equipped with standard execution engines (Python, Node.js, bash, etc.). When a Slack user asks a question, the Agy agent dynamically writes a script, runs it in its isolated sandbox, inspects the Trello API output, self-corrects if any errors occur, and presents a formatted response. In this article, we focus on Trello, but the same principles can be applied to any other syst