# Migration Generate

> Generate database migrations from schema changes

- Skill: `manastalukdar/migration-generate` (Agent Skill)
- Install (CLI): `npx skillmds@latest add manastalukdar/migration-generate`
- Raw SKILL.md: https://api.skillmd.com/api/skills/manastalukdar/migration-generate/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: manastalukdar (https://skillmd.com/u/manastalukdar)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/manastalukdar/migration-generate

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# Database Migration Generator

I'll analyze schema changes and generate safe, reversible database migrations automatically.

Arguments: `$ARGUMENTS` - model changes, schema files, or migration description

## Migration Philosophy

- **Safety First**: Always reversible migrations
- **Zero Downtime**: Production-safe strategies
- **Data Preservation**: Never lose user data
- **Incremental Changes**: Small, testable migrations

## Token Optimization

**Expected range**: 800–2,000 tokens (initial), 200 tokens (no changes)

**Caching**: Caches database type detection in `.claude/cache/db/db-type.json` for 7 days. Invalidated when schema files change.

**Early exit**: Returns immediately if no schema changes are detected since the last migration.

**Patterns used**: Grep-before-Read, early exit, template-based generation, caching