How to Use Google Antigravity in Sanctioned or Restricted Regions (Fix HTTP 400, License #3501 & Quota 429)

Google Antigravity is an advanced AI coding platform built on the foundation of modern code editors and integrated Google's Gemini models for real-time coding help, debugging, and terminal automation. The application utilizes two primary components: the Editor Frontend, where developers write code, and the Language Server, which is a background process that handles code prompts and context, communicates with Google's cloud AI infrastructure, and provides intelligence back to the editor.

In regions where access is restricted, such as Iran, Cuba, and Syria, users frequently experience HTTP 400 errors due to unsupported user locations, License Error #3501 once the cloud-side RPC rejects model access, and HTTP 429 errors indicating rate-limiting due to corrupted local state tokens. These issues arise not only from the IP address but also from the analysis of local persistent token databases, network persistent states, and background error/telemetry reporting by the language_server. If these artifacts flag a restricted environment, access is blocked.

Antigravity Cleaner is an open-source, offline utility written in Go that automates the resolution of these issues. It uses an atomic 4-target auto-fix to patch the language_server, multi-gate auth check, agy CLI binary, editor client files, and VS Code extension guards. The 7-flag zero-telemetry engine silences telemetry beacons and injects authorization flags, while the smart proxy injector routes the editor through local proxy clients without requiring root TUN mode.

Additionally, it resets quota 429 locks by clearing corrupted rate-limit cookies and tracking tokens.

For users who prefer a visual interface, Method 1 involves downloading the standalone binary from the official GitHub releases page, launching the retro GUI, executing a three-step workflow that includes auto-fixing all 4 targets, launching the IDE, and optionally installing a desktop launcher. Method 2 is for those who prefer working in the terminal.

It includes a one-line installer for Linux and macOS, and a PowerShell script for Windows. Quick CLI commands allow running diagnostics, applying all patches, and launching the IDE with injected proxy. If an HTTP 429 quota exceeded error occurs, running ag-cleaner clean will reset the corrupted rate-limit database files without affecting any user chats or project configurations.