database-migrations SKILL.md skillA
database-migrations from chadixearth/graphyloop is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add chadixearth/graphyloop/database-migrations@git:20260816.6319ca5Pins git:20260816.6319ca5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- chadixearth/graphyloop
- Path
skills/database-migrations/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260816.6319ca5, committed Aug 16, 2026
- Size
- 11,908 bytes
- Repository stars
- 3
- License
- MIT
Database migration best practices for schema changes, data migrations, rollbacks, and zero-downtime deployments across PostgreSQL, MySQL, and common ORMs (Prisma, Drizzle, Kysely, Django, TypeORM, golang-migrate).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Database Migration Patterns Safe, reversible database schema changes for production systems. ## When to Activate - Creating or altering database tables - Adding/removing columns or indexes - Running data migrations (backfill, transform) - Planning zero-downtime schema changes - Setting up migration tooling for a new project ## Core Principles 1. **Every change is a migration** — never alter production databases manually 2. **Migrations are forward-only in production** — rollbacks use new forward migrations 3. **Schema and data migrations are separate** — never mix DDL and DML in one migration 4. **Test migrations against production-sized data** — a migration that works on 100 rows may lock on 10M 5. **Migrations are immutable once deployed** — never edit a migration that has run in production ## Migration Safety Checklist Before applying any migration: - [ ] Migration has both UP and DOWN (or is explicitly marked irreversible) - [ ] No full table locks on large tables (use concurrent operations) - [ ] New columns have defaults or are nullable (never add NOT NULL without default) …
Read the whole file at its exact version.
How to install
mdr add chadixearth/graphyloop/database-migrations@sha256:275d5e87afe5ce53The line at the top of this page pins the label git:20260816.6319ca5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ph2umjzzljpccq45)
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Versions
The registry has recorded 1 version of this file, committed on Aug 16, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11908 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
chadixearth/graphyloop · 3 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ph2umjzzljpccq45 GET https://markdownregistry.com/api/v1/resolve?ref=chadixearth/graphyloop/database-migrations GET https://markdownregistry.com/api/v1/blob/275d5e87afe5ce53ca65d5cba4136cdcf26b37f35d8234af3f91e0beb84e31a4
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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