migration-operation-taxonomy SKILL.md skillA
migration-operation-taxonomy from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add testland/qa/migration-operation-taxonomy@git:20260728.1bce424Pins git:20260728.1bce424 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- testland/qa
- Path
plugins/qa-db-migrations/skills/migration-operation-taxonomy/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260728.1bce424, committed Jul 28, 2026
- First version recorded
- Jul 19, 2026
- Size
- 20,207 bytes
- Repository stars
- 11
- License
- MIT
Classifies every DDL and DML statement in a database migration into an eight-category operation taxonomy (additive, backwards-compatible alter, locking, lock-escalating, breaking, data-loss, unsafe default, index-missing foreign key) and assigns a Critical, Warning, or Info severity justified by the lock mode and table-rewrite behavior the target engine actually performs. Records where PostgreSQL and MySQL/InnoDB diverge for the same logical statement, and where behavior is version-gated…
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 operation taxonomy A migration is not one risk. It is a list of statements, each with its own lock mode, its own rewrite behavior, and its own blast radius. This skill gives you the classification scheme: how to split a migration into statements, sort each one into one of eight categories, attach a severity that a lock or rewrite fact justifies, and record which engine and which engine version the answer depends on. ## Scope boundary This skill classifies what a migration **does** and how dangerous that is. It deliberately does **not**: - write or rewrite migration SQL, - choose a migration tool or framework, - run, apply, or roll back a migration, - read the repository to find migration files or downstream consumers. If you need a severity for a statement, you are in the right place. If you need the statement itself authored or executed, you are not. ## Step 1 - Fix the three inputs before classifying anything Classification is meaningless without these. Record them explicitly, and say "unknown" rather than guessing. | Input | Why it changes the answer | |---|---| …
Read the whole file at its exact version.
How to install
mdr add testland/qa/migration-operation-taxonomy@sha256:68d405f8c04e37e1The line at the top of this page pins the label git:20260728.1bce424, 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_np4vri2zfwm5z4ot)
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Versions
The registry has recorded 2 versions of this file, between Jul 19, 2026 and Jul 28, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260728.1bce424 latest | 2026-07-28 | 1bce424 | 20,207 B | A | view · diff |
| git:20260719.f146717 | 2026-07-19 | f146717 | 29,030 B | A | view |
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 (20207 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
testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_np4vri2zfwm5z4ot GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/migration-operation-taxonomy GET https://markdownregistry.com/api/v1/blob/68d405f8c04e37e1557590b3e152216bdac18e7e39b56b9620977b1fac15c083
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.