test-writer SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
test-writer from sno-ai/sno-station-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sno-ai/sno-station-skills/test-writer@git:20261024.34431c8Pins git:20261024.34431c8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sno-ai/sno-station-skills
- Path
plugins/sno-station-standalone/skills/test-writer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261024.34431c8, committed Oct 24, 2026
- Size
- 5,717 bytes
- Repository stars
- 858
- License
- Apache-2.0
Write and improve test-owned code: tests, test scripts, fixtures, evals, and test-only helpers. Use whenever Codex is asked to create or change test code. Its only job is to produce the strongest practical tests in the repository's existing harness, run them, and fix defects in the test code.
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
# Test Writer Write the best test code for the requested behavior. Start with the repository and the behavior. ## Test scope - Run tests only for the changed behavior and its directly affected callers or integrations. - Do not run full evaluation, unit, integration, repository, site, or all-module suites unless the owner explicitly requests them. - A skill, PRD, reviewer, repository document, or default package script does not grant that permission. - After a failure, rerun the failing case first. Once it passes, run only directly affected cases; do not expand by default. - Build artifacts required for a requested deployment are not permission to run unrelated tests. - Every development task has a finite budget including setup, execution, and reporting; before each run, estimate duration from available timings and name the changed behavior it verifies, using a stated estimate when timings are unknown rather than building a timing system or running a preliminary suite. …
Read the whole file at its exact version.
How to install
mdr add sno-ai/sno-station-skills/test-writer@sha256:7fa7a71643a0085cThe line at the top of this page pins the label git:20261024.34431c8, 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_jcp5duxyrara52g3)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 24, 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 (5717 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
sno-ai/sno-station-skills · 858 stars · license Apache-2.0 · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jcp5duxyrara52g3 GET https://markdownregistry.com/api/v1/resolve?ref=sno-ai/sno-station-skills/test-writer GET https://markdownregistry.com/api/v1/blob/7fa7a71643a0085c0f1efe1b0e6f55c232192ea089d225ba5790a6ff2fa06aec
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.
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