migration SKILL.md skillA
migration from juliusbrussee/caveman is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add juliusbrussee/caveman/migration@git:20260811.82864c8Pins git:20260811.82864c8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- juliusbrussee/caveman
- Path
skills/migration/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260811.82864c8, committed Aug 11, 2026
- Size
- 784 bytes
- Repository stars
- 116,476
- License
- Apache-2.0
Implement reversible compatibility-safe transitions. Use for schema, data, API, protocol, configuration, or dependency migrations requiring rollback and preservation proof.
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 Map current readers, writers, data shape, compatibility window, and ownership before editing. - Define forward path and rollback path. - Preserve existing data; make destructive steps explicit and separately authorized. - Keep mixed-version operation safe where rollout can overlap. - Sequence expand, migrate, verify, then contract when applicable. - Make retries idempotent and partial failure observable. - Verify old and new paths at required transition stages. Stop after requested stage passes; do not perform later destructive contraction implicitly.
Read the whole file at its exact version.
How to install
mdr add juliusbrussee/caveman/migration@sha256:fe7cf96a58b05211The line at the top of this page pins the label git:20260811.82864c8, 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_47ypavedk7hhxnpi)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 11, 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 (784 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
juliusbrussee/caveman · 116,476 stars · license Apache-2.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_47ypavedk7hhxnpi GET https://markdownregistry.com/api/v1/resolve?ref=juliusbrussee/caveman/migration GET https://markdownregistry.com/api/v1/blob/fe7cf96a58b0521130fbb886dab2a326869d6ed0001e0306fd244014ba7a9662
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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