migration-safety-checker SKILL.md skillA
migration-safety-checker from smicolon/ai-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smicolon/ai-kit/migration-safety-checker@git:20260215.92455aaPins git:20260215.92455aa in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smicolon/ai-kit
- Path
packs/django/skills/migration-safety-checker/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260215.92455aa, committed Feb 15, 2026
- Size
- 9,355 bytes
- Repository stars
- 7
- License
- MIT
This skill should be used when the user asks to "create a migration", "run makemigrations", "modify a model field", "rename a column", or mentions "schema change", "alter table", "database migration". Validates migrations are production-safe.
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
# Migration Safety Checker Validates Django migrations are production-safe before they cause data loss. ## Activation Triggers This skill activates when: - Running `makemigrations` - Modifying model fields - Mentioning "migration", "schema", "alter table" - Adding/removing/renaming fields - Changing field types - Creating or modifying migration files ## Safety Requirements All migrations MUST be: - ✅ **Reversible** - Can roll back safely - ✅ **No data loss** - Preserve existing data - ✅ **Tested** - Run on staging first - ✅ **Safe for production** - No downtime operations - ✅ **Documented** - Explain what changes and why ## High-Risk Operations These operations require special attention: ### 🔴 CRITICAL RISK - Data Loss Possible 1. **Dropping columns** without data migration 2. **Renaming fields** without data migration 3. **Changing field types** (data conversion issues) 4. **Adding non-nullable fields** without default 5. **Removing tables** with data ### 🟡 MEDIUM RISK - Requires Careful Planning 1. **Adding indexes** on large tables (use `CONCURRENTLY`) 2. **Adding unique constraints** (check for duplicates first) 3. **Changing `max_length`** (data truncation risk) …
Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/migration-safety-checker@sha256:2f6f007d8e53295aThe line at the top of this page pins the label git:20260215.92455aa, 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_hcymagblozahg76m)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Feb 15, 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 (9355 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
smicolon/ai-kit · 7 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hcymagblozahg76m GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/migration-safety-checker GET https://markdownregistry.com/api/v1/blob/2f6f007d8e53295a3f4de5496768de94733344b9297e084f87fcf652c6e85409
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.