cad-undo SKILL.md skillA
cad-undo from crenshawdev/cadence is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add crenshawdev/cadence/cad-undo@git:20261029.0ae5ff0Pins git:20261029.0ae5ff0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- crenshawdev/cadence
- Path
skills/cad-undo/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261029.0ae5ff0, committed Oct 29, 2026
- First version recorded
- Jul 10, 2026
- Size
- 1,115 bytes
- Repository stars
- 11
- License
- MIT
Safely undo a phase - roll back its commits from the SUMMARY manifest, revert (or --no-commit to re-do), and reset the phase status.
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
<objective>
Undo a phase's work by reverting its commits, using the phase SUMMARY.md as the
manifest of exactly which hashes to touch (cad-execute records commits-per-task
with hashes there). Safe by construction: never runs on a dirty tree, never
guesses. No heuristic dependency-check - instead cad-undo states plainly
whether later phases exist and lets the user decide.
</objective>
<execution_context>
@${CLAUDE_PLUGIN_ROOT}/cadence-core/workflows/undo.md
@${CLAUDE_PLUGIN_ROOT}/cadence-core/references/git-guard.md
</execution_context>
<process>
Run the undo workflow end-to-end. Refuse on a dirty tree. Show the exact hashes
and get confirmation before reverting. Reset the phase's status as part of the
rollback (this is the one legitimate exception to cad-verify owning status).
</process>Read the whole file at its exact version.
How to install
mdr add crenshawdev/cadence/cad-undo@sha256:8c39e37b20efd640The line at the top of this page pins the label git:20261029.0ae5ff0, 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_7mrs5gqnionojbxw)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Jul 10, 2026 and Oct 29, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261029.0ae5ff0 latest | 2026-10-29 | 0ae5ff0 | 1,115 B | A | view · diff |
| git:20261027.306ae44 | 2026-10-27 | 306ae44 | 1,124 B | A | view · diff |
| git:20260805.6a63445 | 2026-08-05 | 6a63445 | 1,093 B | A | view · diff |
| git:20260805.43a55f2 | 2026-08-05 | 43a55f2 | 1,212 B | A | view · diff |
| git:20260715.130ceab | 2026-07-15 | 130ceab | 1,206 B | A | view · diff |
| git:20260711.c28c696 | 2026-07-11 | c28c696 | 1,220 B | A | view · diff |
| git:20260710.606e628 | 2026-07-10 | 606e628 | 1,204 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 (1115 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
crenshawdev/cadence · 11 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7mrs5gqnionojbxw GET https://markdownregistry.com/api/v1/resolve?ref=crenshawdev/cadence/cad-undo GET https://markdownregistry.com/api/v1/blob/8c39e37b20efd6405d2c77814ff131d31dd8fc3631acec5a85010aeaa4e9fd95
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.