zip-toolkit SKILL.md skillA
zip-toolkit 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/zip-toolkit@v1.0Pins v1.0 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/zip-toolkit/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0, committed Sep 16, 2026
- Size
- 4,038 bytes
- Repository stars
- 14
- License
- MIT
Full zip and archive toolkit for Grok. Unzip, list, create, add, extract, test, convert, and install skill packs from zip or tar.gz. Trigger on unzip this, /zip, extract archive, pack skills, zip slip-safe extract, inspect zip, create zip, install skill pack from zip.
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
# Zip Toolkit Do every practical zip/archive job Grok hits in this sandbox. Default destination is `/home/workdir/artifacts/` unless the user names another path. ## When to use - User drops a `.zip` / `.tar.gz` / `.tgz` attachment - User says `/zip`, unzip, extract, pack, archive, inspect zip - Need to install a skill pack from a zip without clobbering the live library blindly - Need a dated persistence tarball for Drive/GitHub ## Non-negotiable rules - Never extract with zip-slip. All members must stay under the chosen dest. - Never write into `/home/workdir/.grok/skills/` unless the user explicitly says install/overwrite. - Default extract dest is `/home/workdir/artifacts/<archive-stem>/` - Report exact dest path, file count, top-level folders, and bytes. - Password zips — try empty password then stop and ask. Do not brute force. - Do not dump copyrighted bulk text from extracted files into chat. Summarize. - Sandbox IO on hundreds of tiny files is slow. Run extract in background if listing shows more than 200 files. …
Read the whole file at its exact version.
How to install
mdr add stijnman/grok-custom-skills/zip-toolkit@sha256:4d2bfec2e026f33dThe line at the top of this page pins the label v1.0, 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_q5nrya7kgvzilngd)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 16, 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 (4038 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_q5nrya7kgvzilngd GET https://markdownregistry.com/api/v1/resolve?ref=stijnman/grok-custom-skills/zip-toolkit GET https://markdownregistry.com/api/v1/blob/4d2bfec2e026f33d95688ffc4e6d9fb59bdede9f29e163e5ede15c63fedff959
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.