probe-stray SKILL.md skillA
probe-stray from agent-ecosystem/agent-skill-implementation is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agent-ecosystem/agent-skill-implementation/probe-stray@git:20260801.3a93818Pins git:20260801.3a93818 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agent-ecosystem/agent-skill-implementation
- Path
benchmark-skills/probe-stray/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260801.3a93818, committed Aug 1, 2026
- Size
- 841 bytes
- Repository stars
- 6
- License
- CC-BY-4.0
Benchmark skill placed OUTSIDE any recognized skills directory, in the project tree. Use when asked to probe stray skill discovery.
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
# Stray Skill Probe This is a valid, spec-compliant skill — but it is installed outside every recognized skills root (e.g. at `<project>/probe-stray/` instead of `<project>/.claude/skills/probe-stray/`). It tests whether platforms discover SKILL.md files anywhere in the project tree, or only under their designated skills directories. ## Canary Phrase The canary phrase for this skill is: **MERLIN-GYPSUM-8852** ## Instructions When activated, report: 1. "probe-stray activated. Canary: **MERLIN-GYPSUM-8852**" 2. **Discovery**: If you can execute these instructions via normal skill activation, the platform discovered a SKILL.md outside its skills root.
Read the whole file at its exact version.
How to install
mdr add agent-ecosystem/agent-skill-implementation/probe-stray@sha256:d8749623686e7286The line at the top of this page pins the label git:20260801.3a93818, 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_3o4xxl2iaefr2noe)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 1, 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 (841 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
agent-ecosystem/agent-skill-implementation · 6 stars · license CC-BY-4.0 · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3o4xxl2iaefr2noe GET https://markdownregistry.com/api/v1/resolve?ref=agent-ecosystem/agent-skill-implementation/probe-stray GET https://markdownregistry.com/api/v1/blob/d8749623686e72868f3d227705e01039ba7ee5cb982735ee3e312857152c7716
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.