probe-Upper-Case SKILL.md skillA
probe-Upper-Case 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-Upper-Case@git:20260801.688ea1aPins git:20260801.688ea1a 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-Upper-Case/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260801.688ea1a, committed Aug 1, 2026
- Size
- 812 bytes
- Repository stars
- 6
- License
- CC-BY-4.0
Benchmark skill whose name violates the lowercase-only rule. Use when asked to probe uppercase name handling.
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
# Uppercase Name Probe The spec's `name` field "may only contain unicode lowercase alphanumeric characters and hyphens." This skill's name contains uppercase letters (and matches its directory name exactly, so only the character rule is violated). It tests whether platforms reject, normalize, or tolerate an uppercase name. ## Canary Phrase The canary phrase for this skill is: **DUNLIN-OLIVINE-7821** ## Instructions When activated, report: 1. "probe-Upper-Case activated. Canary: **DUNLIN-OLIVINE-7821**" 2. **Catalog identity**: What name does this skill appear under in your catalog: the uppercase form, a lowercased form, or something else?
Read the whole file at its exact version.
How to install
mdr add agent-ecosystem/agent-skill-implementation/probe-Upper-Case@sha256:88d25f5efa6e3b44The line at the top of this page pins the label git:20260801.688ea1a, 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_ezupcx4wlmpyprqp)
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 (812 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_ezupcx4wlmpyprqp GET https://markdownregistry.com/api/v1/resolve?ref=agent-ecosystem/agent-skill-implementation/probe-Upper-Case GET https://markdownregistry.com/api/v1/blob/88d25f5efa6e3b445bd63b4d82efcacf43f3ae5215b9901a1ceb72e8e6d01be2
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.