agy terminal tool), the Antigravity desktop app, and the Antigravity IDE — are now explicitly supported on the discovery page at mcp.chainstack.com: in the skill-install table, the install example, and the MCP registration block. All three share the same ~/.gemini/antigravity/mcp_config.json config and ~/.agents/skills/chainstack/ skill directory.
Gemini CLI users — heads up: Google announced that Gemini CLI is being retired on June 18, 2026 in favor of Antigravity CLI. Both are already supported with separate setup blocks, and the migration is mostly seamless since they share the same MCP config path.