Create and apply a Prisma migration safely against the remote (tunneled) PostgreSQL. Use for schema changes - "create a migration", "apply migrations", "add a column/table".
Installs into .claude/skills of the current project.
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---
name: db-migrate
description: Create and apply a Prisma migration safely against the remote (tunneled) PostgreSQL. Use for schema changes - "create a migration", "apply migrations", "add a column/table".
---
# DB migrate
The database is remote; `DATABASE_URL` points at the SSH tunnel's local port (5433). All
commands are `bun --cwd=apps/api run …`.
1. Confirm the tunnel is up (`bunx prisma migrate status` from `apps/api`). If it isn't, ask the
user to run `bun run db:tunnel` in a separate terminal - don't start it yourself.
2. Edit the schema - split by domain under `apps/api/prisma/schema/*.prisma`.
3. `db:migrate` - creates the migration SQL only (`--create-only`), never applies.
4. Read the generated SQL and confirm it matches intent. Prisma turns renames into drop + add -
hand-edit to `ALTER` when data must survive.
5. `db:migrate:apply`, then `db:generate`.
Never run `db:reset` without explicit user confirmation - it wipes the remote database.
