Migration Safety Pro is a skill that gives an AI agent a structured blueprint for executing database schema changes without causing downtime or data loss. Rather than generating generic migration SQL, it applies industry-standard safety protocols including the Expand-Contract pattern, Ghost Tables, and Batch Backfilling to ensure every change is backward-compatible and safe for production environments.
The skill covers a broad set of frameworks and tools: Prisma, TypeORM, Sequelize, and Knex.js on Node.js; Alembic (SQLAlchemy) and Django Migrations for Python; Rails Active Record and golang-migrate for Ruby and Go; and Liquibase for enterprise environments. Supported databases include PostgreSQL, MySQL, MariaDB, SQLite, and SQL Server.
When an agent uses this skill, it produces structured migration plans that include a safety risk assessment, a multi-step execution strategy separating the Expand phase from the Contract phase, framework-specific code snippets, and a concrete rollback procedure. It identifies risks such as table locks on large tables and suggests non-blocking approaches like creating indexes CONCURRENTLY in PostgreSQL.
This skill is designed for situations where default ORM migration behavior is insufficient — particularly high-traffic environments or databases with large datasets where an unguarded ALTER TABLE could lock tables and cause significant production incidents.