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.agents/skills/prisma-cli/references/migrate-deploy.md

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+# prisma migrate deploy
+
+Applies pending migrations in production/staging environments.
+
+## Command
+
+```bash
+prisma migrate deploy
+```
+
+## What It Does
+
+- Applies all pending migrations from `prisma/migrations/`
+- Updates `_prisma_migrations` table
+- Does NOT generate new migrations
+- Does NOT run seed scripts
+- Safe for CI/CD and production
+
+## Options
+
+| Option | Description |
+|--------|-------------|
+| `--schema` | Custom path to your Prisma schema |
+| `--config` | Custom path to your Prisma config file |
+
+## When to Use
+
+- Production deployments
+- Staging environments  
+- CI/CD pipelines
+- Any non-development environment
+
+## Examples
+
+### Basic deployment
+
+```bash
+prisma migrate deploy
+```
+
+### In CI/CD pipeline
+
+```yaml
+# GitHub Actions example
+- name: Apply migrations
+  run: npx prisma migrate deploy
+  env:
+    DATABASE_URL: ${{ secrets.DATABASE_URL }}
+```
+
+### Docker deployment
+
+```dockerfile
+# Run migrations before starting app
+CMD npx prisma migrate deploy && node dist/index.js
+```
+
+## Comparison with migrate dev
+
+| Feature | migrate dev | migrate deploy |
+|---------|-------------|----------------|
+| Creates migrations | Yes | No |
+| Applies migrations | Yes | Yes |
+| Detects drift | Yes | No |
+| Prompts for input | Yes | No |
+| Uses shadow database | Yes | No |
+| Safe for production | No | Yes |
+| Resets on issues | Prompts | Fails |
+
+## Production Workflow
+
+1. **Development**: Create migrations locally
+   ```bash
+   prisma migrate dev --name add_feature
+   ```
+
+2. **Commit**: Include migration files in version control
+   ```bash
+   git add prisma/migrations
+   git commit -m "Add feature migration"
+   ```
+
+3. **Deploy**: Apply in production
+   ```bash
+   prisma migrate deploy
+   ```
+
+## Error Handling
+
+### Failed migration
+
+If a migration fails, `migrate deploy` exits with error. The failed migration is marked as failed in `_prisma_migrations`.
+
+To fix:
+1. Resolve the issue (fix SQL, database state, etc.)
+2. Mark as resolved: `prisma migrate resolve --applied <migration_name>`
+3. Re-run: `prisma migrate deploy`
+
+### Check status first
+
+```bash
+prisma migrate status
+```
+
+Shows pending and applied migrations before deploying.
+
+## Configuration
+
+Ensure `prisma.config.ts` has the production database URL:
+
+```typescript
+import 'dotenv/config'
+import { defineConfig, env } from 'prisma/config'
+
+export default defineConfig({
+  datasource: {
+    url: env('DATABASE_URL'),
+  },
+})
+```
+
+## Best Practices
+
+1. Always run `migrate status` before `migrate deploy` in CI
+2. Have a rollback plan (backup before migrations)
+3. Test migrations in staging first
+4. Never use `migrate dev` in production