AI + Flutter WorkflowGemini CLIAntigravity CLIagyMigration GuideFlutter Tools

    Migrating from Gemini CLI to Antigravity CLI (agy): A Flutter Dev's Checklist

    By Afaq ZahirPublished August 10, 2026Reviewed August 22, 20268 min read
    Quick Answer

    Migrating to Antigravity CLI (agy) brings multi-tool agent orchestration, persistent memory, and MCP server connectivity to Flutter workflows. Migration involves updating global configs, creating workspace AGENTS.md files, and registering Flutter dev MCP servers.

    Key Takeaways
    • Install and authenticate the agy CLI toolchain.
    • Migrate custom prompt files into structured AGENTS.md and skill folders.
    • Connect Flutter DevTools and Dart analyzer MCP servers for rich context.
    Gemini CLI to Antigravity CLI migration roadmap

    Following the official sunset of Gemini CLI on June 18, 2026, Google has consolidated all AI developer tooling into the Google Antigravity ecosystem. For Flutter developers using the legacy CLI, migrating to Antigravity brings significantly upgraded agentic capabilities across four primary surfaces.

    The 4 Antigravity Surfaces

    1. Antigravity Desktop: An IDE environment with an integrated agent panel, diff viewer, and visual agent trajectory timeline.
    2. Antigravity CLI (agy): A ultra-fast, terminal-first agentic tool written in Go that runs agent loops directly in your shell.
    3. Antigravity SDK: A programmatic library for triggering custom agent workflows inside CI/CD pipelines.
    4. Managed Agents: Cloud-isolated environment instances spun up on demand via API for heavy background tasks.

    Migration Checklist for Flutter Projects

    • 1. Remove Legacy Gemini CLI Hooks: Uninstall old CLI packages and clean up deprecated env variables.
    • 2. Install the agy Go CLI: Run brew install google-antigravity/tap/agy or download the native binary.
    • 3. Convert Project Context to AGENTS.md: Transfer custom prompt rules into a root AGENTS.md file.
    • 4. Configure Flutter MCP Servers: Enable Dart and Stitch MCP plugins in your ~/.config/antigravity/mcp.json configuration.
    • 5. Verify CI/CD Integration: Update GitHub Actions or Codemagic pipelines to use the Antigravity SDK for automated code reviews.
    Sources & Authoritative Documentation
    Afaq Zahir - Lead Flutter & AI Mobile Engineer
    Written by Afaq ZahirLead Flutter Engineer

    4+ years of mobile engineering experience architecting scalable Flutter apps, eliminating performance bottlenecks, and deploying AI-assisted workflows (Claude, Antigravity, MCP).

    Consult with Afaq on your Flutter project
    Share this Guide
    Engineering Service

    Mobile AI & LLM Integration

    Agentic CLI and tooling migration for development teams.

    Explore Service Scope
    Real-World Evidence

    TourVista - Tooling Migration

    Explore how these architectural patterns and benchmarks were applied in production applications.

    View Case Study Breakdown

    Related Technical Guides

    View all insights
    ai-flutter

    How to Build a Flutter App With AI in 2026: My Complete Claude, ChatGPT, Stitch & Antigravity Workflow

    Can you build a real, production-ready Flutter application with AI in 2026? Discover Afaq Zahir's step-by-step agentic workflow combining Claude 3.7, ChatGPT, Google Stitch, MCP, and Google Antigravity into a unified mobile development pipeline.

    12 min read→
    ai-flutter

    Google Antigravity for Flutter Developers: Complete Agentic Workflow Guide

    Google Antigravity is the agentic AI suite launched at I/O 2026 for building Flutter apps. Learn the complete workflow: solving complex Dart tasks, proactive file editing, test verification, and automated project setup.

    9 min read→
    ai-flutter

    AGENTS.md for Flutter: How to Guide AI Coding Agents With Project Rules

    Discover how to write an effective AGENTS.md file in your Flutter project root. Standing instructions, architectural rules, state management guidelines, and coding standards that agentic AI follows.

    6 min read→