database-migration-rollout SKILL.md skillA
database-migration-rollout from dayfinggg/openai-codex-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dayfinggg/openai-codex-agent-skills/database-migration-rollout@git:20261029.276ae81Pins git:20261029.276ae81 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dayfinggg/openai-codex-agent-skills
- Path
codex/skills/database-migration-rollout/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261029.276ae81, committed Oct 29, 2026
- Size
- 2,163 bytes
- Repository stars
- 8
- License
- MIT
Plan and validate schema migrations with lock, data, application-compatibility, rollout, and restoration checks. Use for migration files or schema-change deployment.
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
Make the migration compatible with the database and the application versions that coexist during rollout. 1. Establish the engine and exact version, migration runner, current schema, data volume, indexes, replication, and deployment order. Inspect existing migration conventions before choosing a mechanism. 2. Identify invariants, affected reads and writes, constraint violations, and dependent objects. Separate a structural change from data transformation and access-policy changes. 3. Consult version-matched DDL documentation for lock level, table rewrite, transaction restrictions, and online or concurrent behavior. Do not infer safety from a fast empty-table test. 4. Prefer an expand, compatible application change, bounded resumable backfill, and contract sequence when coexistence requires it. A simple atomic change does not need a speculative multistage rollout. 5. Bound lock acquisition and retry according to actual traffic and operational constraints. Preserve data and stop on unexpected state. Do not cancel unrelated sessions or weaken constraints to make the migration finish. …
Read the whole file at its exact version.
How to install
mdr add dayfinggg/openai-codex-agent-skills/database-migration-rollout@sha256:4d0f3f1b4649466eThe line at the top of this page pins the label git:20261029.276ae81, 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_3fndbqkecxifu4cm)
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Versions
The registry has recorded 1 version of this file, committed on Oct 29, 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 (2163 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
dayfinggg/openai-codex-agent-skills · 8 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3fndbqkecxifu4cm GET https://markdownregistry.com/api/v1/resolve?ref=dayfinggg/openai-codex-agent-skills/database-migration-rollout GET https://markdownregistry.com/api/v1/blob/4d0f3f1b4649466e8a8fd60ceeae4138f92afb0c2befabd34be1c950613728bd
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.