skill-evolver SKILL.md skillA
skill-evolver from stijnman/grok-custom-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add stijnman/grok-custom-skills/skill-evolver@v1.2.1Pins v1.2.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- stijnman/grok-custom-skills
- Path
.grok/skills/skill-evolver/SKILL.md- Versions recorded
- 3
- Latest version
- v1.2.1, committed Aug 19, 2026
- First version recorded
- Jun 24, 2026
- Size
- 1,834 bytes
- Repository stars
- 14
- License
- MIT
Full skill rewrite and improvement with versioned backups and templates. Use for: evolve skill, upgrade SKILL.md, improve skill file, `skill-evolution-engine`.
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
# Skill Evolver ## When to Use - User says **evolve skill** or task matches this capability - User says **upgrade SKILL.md** or task matches this capability - User says **improve skill file** or task matches this capability ## Workflow 1. Create a local versioned backup of the target SKILL.md and read references/evolution-guide.md for the rubric. 2. Prepare a reviewable rewrite diff that identifies the affected sections, expected benefits, and rollback path. 3. Obtain explicit user approval before applying, saving, committing, publishing, or otherwise persisting the rewrite. 4. After approval, apply the rewrite and validate it with hyper-skill-tester. Present any rollback option for approval rather than restoring automatically. ## References Read `references/evolution-guide.md` when setup, backends, or rubric details are needed. ## Integrations - `skill-evolution-engine` - `hyper-skill-tester` - `natural-language-to-skill` ## Error Handling | Failure | Response | |---------|----------| | Broken frontmatter | Preserve the draft, show the local backup and rollback diff, and wait for user approval before restoring. | ## Gotchas …
Read the whole file at its exact version.
How to install
mdr add stijnman/grok-custom-skills/skill-evolver@sha256:4f303e67e9fe8294The line at the top of this page pins the label v1.2.1, 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_uudvh4vdcpythcdc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 24, 2026 and Aug 19, 2026, about one every 28 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.2.1 latest | 2026-08-19 | e12dafc | 1,834 B | A | view · diff |
| v1.2.0 | 2026-08-14 | abe185a | 1,461 B | A | view · diff |
| v1.1.0 | 2026-06-24 | 5c9866b | 1,563 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 (1834 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
stijnman/grok-custom-skills · 14 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_uudvh4vdcpythcdc GET https://markdownregistry.com/api/v1/resolve?ref=stijnman/grok-custom-skills/skill-evolver GET https://markdownregistry.com/api/v1/blob/4f303e67e9fe8294ef7162810e4e68923b829df752c43fb8b4902b7155e18b4f
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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