skill-marketplace-installer SKILL.md skillA
skill-marketplace-installer 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-marketplace-installer@v1.1.0Pins v1.1.0 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/skill-marketplace-installer/SKILL.md- Versions recorded
- 3
- Latest version
- v1.1.0, committed Aug 14, 2026
- First version recorded
- Jun 24, 2026
- Size
- 2,523 bytes
- Repository stars
- 14
- License
- MIT
Safely search and install agent skills from public marketplaces with explicit user consent and security checks. Use for: find skill, install skill, skill marketplace, check skill safety.
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 Marketplace Installer ## When to Use - User says **find skill** or task matches this capability - User says **install skill** or task matches this capability - User says **skill marketplace** or task matches this capability - User says **check skill safety** or task matches this capability ## Workflow 1. Search marketplace via documented CLI (npx @agentskill.sh/cli search). 2. Show skill name, owner, description, and ratings before install. 3. Require explicit user approval before install. 4. Run security scan if CLI supports it; warn on suspicious patterns. 5. Install to user skills directory; list what was added. 6. Never install skills requesting credentials in SKILL.md without user review. ## Integrations - `skill-rubric-reviewer` - `hitl-approver` - `privacy-redactor` ## Error Handling | Failure | Response | |---------|----------| | CLI unavailable | Document manual install from source URL with rubric review first. | | Scan flags risk | Block install; explain finding; offer alternatives. | ## Gotchas - Third-party skills are untrusted until reviewed with skill-rubric-reviewer. ## Safety & Ethics (Publication-Ready) …
Read the whole file at its exact version.
How to install
mdr add stijnman/grok-custom-skills/skill-marketplace-installer@sha256:4f5f2deb2ccf171cThe line at the top of this page pins the label v1.1.0, 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_g2loabpuwqg5mmau)
3 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 14, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.0 latest | 2026-08-14 | 80f2e55 | 2,523 B | A | view · diff |
| v1.1.0 | 2026-08-14 | abe185a | 2,538 B | A | view · diff |
| v1.0.0 | 2026-06-24 | 5c9866b | 2,620 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 (2523 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_g2loabpuwqg5mmau GET https://markdownregistry.com/api/v1/resolve?ref=stijnman/grok-custom-skills/skill-marketplace-installer GET https://markdownregistry.com/api/v1/blob/4f5f2deb2ccf171c5b6648d294b2064563e627c6d2d50f28931dbcf42fc2bbe5
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.