Rehearse a live-app schema change + backfill on a snapshot-seeded preview deployment, verify, then promote the proven change to prod with the snapshot as rollback.
Install
npx skills add convex/agent-skills --skill convex-migrate-rehearsenpx skills add convex/agent-skills --skill convex-migrate-rehearse -a claude-code -gnpx skills add convex/agent-skills --skill convex-migrate-rehearse -a codex -ggemini skills install https://github.com/convex/agent-skills.git --path skills/convex-migrate-rehearsegh skill install convex/agent-skills convex-migrate-rehearsegit clone --depth 1 https://github.com/convex/agent-skills /tmp/convex__agent-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/convex__agent-skills/skills/convex-migrate-rehearse ~/.claude/skills/convex-migrate-rehearse # Claude Code
cp -R /tmp/convex__agent-skills/skills/convex-migrate-rehearse ~/.agents/skills/convex-migrate-rehearse # Codex, Cursor, Gemini CLI, Copilot, OpenCode