A CLI tool that automates full migration from Gemini CLI to Antigravity CLI

Google's forced Gemini CLI shutdown on June 18, 2026 leaves hundreds of thousands of developers holding broken setups: MCP config schema changed (url -> serverUrl), state directories moved, streaming output format changed, exit codes changed, and workspace skill folders require manual relocation. Google ships only a static compat-checker and a single plugin import command. CI pipelines, automation scripts, and MCP server configs all break silently. This tool runs a single command, audits the existing Gemini CLI installation, translates config schemas, rewrites MCP server entries, migrates state directories, and installs a streaming/exit-code compat shim for scripts that cannot be immediately rewritten. A team tier adds managed migration for orgs with many developers and CI pipelines, and an ongoing subscription keeps the shim current as Antigravity 2.x evolves.

Demand Breakdown

616

Social Proof 2 sources

Gemini CLI will stop working from June 18, 2026

@primaprashant · 2026-05-19

616 BL

An important update: Transitioning Gemini CLI to Antigravity CLI

@Google Developers · 2026-05-19

Gap Assessment

UnderservedExisting solutions leave gaps. Underserved market

2 tools exist (Google Antigravity compat-checker, gemini-antigravity-cli (testerlingcodo, GitHub)) but gaps remain: Does not rewrite MCP url->serverUrl schema; does not migrate state directories or workspace skill folders; does not shim streaming format or exit code differences; does not address CI/automation pipeline breakage; no rollback; no diff preview; Not an executable tool; no automated config translation; no shim; no state-dir migration; no rollback; no team/org support.

Features8 agent-ready prompts

MCP config schema translation (url -> serverUrl rewrite)

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Plugin and extension import from Gemini CLI

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Default model and flag remapping

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Streaming format and exit code compat shim

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State directory and settings migration

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Dry-run mode with unified diff preview

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Rollback to Gemini CLI state

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Validation against the live Antigravity CLI installation

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Competitive LandscapeFREE

Product	Does	Missing
Google Antigravity compat-checker	Static script that checks for known breaking patterns in existing Gemini CLI configs and scripts; the agy plugin import gemini command migrates extensions and most MCP entries	Does not rewrite MCP url->serverUrl schema; does not migrate state directories or workspace skill folders; does not shim streaming format or exit code differences; does not address CI/automation pipeline breakage; no rollback; no diff preview
gemini-antigravity-cli (testerlingcodo, GitHub)	Community guide repo with manual migration steps; covers install, plugin import command, and basic MCP rename	Not an executable tool; no automated config translation; no shim; no state-dir migration; no rollback; no team/org support

Notable VoicesFREE

@primaprashant616 likes · 2026-05-19

"Gemini CLI will stop working from June 18, 2026 — submitted thread that collected 616 points and surfaced widespread developer frustration with the forced migration and lack of automated tooling"