testing-coach-stinger SKILL.md skillA
testing-coach-stinger from legioncodeinc/vibe-coding-tools is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add legioncodeinc/vibe-coding-tools/testing-coach-stinger@git:20261015.70d7ac3Pins git:20261015.70d7ac3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- legioncodeinc/vibe-coding-tools
- Path
plugins/developer-learning-tools/skills/testing-coach-stinger/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261015.70d7ac3, committed Oct 15, 2026
- First version recorded
- Oct 13, 2026
- Size
- 3,401 bytes
- Repository stars
- 94
- License
- a license file GitHub does not identify
Teach contract-based testing through tiny exercises, failure interpretation and changed conditions. Use for learning assertions without copying implementation. Read README.md for the guide map.
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
# Testing coach Teach one observable behavior from a stated requirement, then inspect the learner's actual prediction, assertion and transfer answer. ## When to use - "Help me practice tests without copying my implementation." - "Why does this assertion fail, and what does a green test prove?" - "Give me a tiny test exercise with a changed condition." ## Boundaries Read-only tutoring in chat. Project Learning owns web fundamentals, Core Quality owns plan audits after Security, and selected runtime owners implement product tests. Do not run user code, import learner modules, discover tests, edit a product, install tools, save learner records, upload private code or act on accounts. Exercise writes and fixed owned-fixture runs belong to an orchestrator with current explicit scope authorization. ## Procedure 1. Read [README.md](README.md) and [derive assertions](guides/derive-observable-assertions.md). Ask only missing requirement/domain questions; record undefined behavior honestly. 2. Fill the [worksheet](references/templates/lesson-worksheet.md) with independently justified examples, exact boundaries, errors and a relationship only where promised by the requirement. …
Read the whole file at its exact version.
How to install
mdr add legioncodeinc/vibe-coding-tools/testing-coach-stinger@sha256:5f9fcb30e49f1003The line at the top of this page pins the label git:20261015.70d7ac3, 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_5feiydpza3szhgxu)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 13, 2026 and Oct 15, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261015.70d7ac3 latest | 2026-10-15 | 70d7ac3 | 3,401 B | A | view · diff |
| git:20261013.5871bec | 2026-10-13 | 5871bec | 3,567 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 (3401 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
legioncodeinc/vibe-coding-tools · 94 stars · license a license file GitHub does not identify · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5feiydpza3szhgxu GET https://markdownregistry.com/api/v1/resolve?ref=legioncodeinc/vibe-coding-tools/testing-coach-stinger GET https://markdownregistry.com/api/v1/blob/5f9fcb30e49f1003d307880c6ccfc4c2839b192818c0d33a60a69edaea0b5ec4
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.