Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLIAbout this skill
Use when changing schema on a live production database without dropping traffic, doing expand/contract migrations, backfilling new columns on million-plus-row tables, dual-writing across schemas, renaming a hot column, splitting a table, or adding a foreign key to a big table. Triggers: ALTER TABLE locks the world, "must be removed in a separate deploy", expand-contract-cleanup phases, NOT NULL on populated column, foreign-key add on big table, dropping a column still read by old replicas, locktimeout choice, gh-ost vs pt-online-schema-change. NOT for greenfield schema design, ORM-managed migration mechanics (Prisma/Drizzle), D1/Supabase CLI quirks, or NoSQL document migrations.
Quick start
- Copy the install prompt. Use the green button above this README.
- Send it to your agent. Paste it into your coding agent’s chat and send.
- Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.
Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.
0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1
Content SHA-256: 864e4f70000ebb9a4f9497cb75f55c97d7519705acb112a3e763d3526d51105b
About this listing
- Category
- Engineering
- Reported license
- Not specified
- Listing language (estimated)
- English
- Review status
- Not individually reviewed
- Agent compatibility
- Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.