coverage-analysis SKILL.md skillA
coverage-analysis from petrkindlmann/qa-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add petrkindlmann/qa-skills/coverage-analysis@v2.0Pins v2.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- petrkindlmann/qa-skills
- Path
skills/coverage-analysis/SKILL.md- Versions recorded
- 5
- Latest version
- v2.0, committed Jun 10, 2026
- First version recorded
- May 10, 2026
- Size
- 18,863 bytes
- Repository stars
- 198
- License
- MIT
Measure and improve test coverage meaningfully. Covers Istanbul/V8/coverage.py configuration, coverage gap analysis by risk, coverage-as-ratchet in CI (never let it decrease), PR coverage diff checks, mutation testing for assertion quality, and distinguishing meaningful from vanity coverage. Use when: "code coverage," "coverage gap," "Istanbul," "coverage threshold," "coverage report," "branch coverage." Not for: writing the tests that raise coverage — use unit-testing; coverage as a tracked…
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
<objective> A suite at 90% line coverage with assertion-free tests catches zero bugs — line coverage proves code ran, not that a regression would be caught. This skill measures the right things (branch coverage, mutation score, critical-path coverage), gates them in CI with a ratchet so coverage can only go up, and surfaces gaps by risk instead of chasing a vanity number. It prevents the classic failure: a green coverage badge over a test suite that never asserts anything meaningful, while the payment module sits at 30%. </objective> ## Quick Route | Situation | Go to | |-----------|-------| | Pick and configure a coverage provider | Coverage Tools → `references/tool-config.md` | | Decide where to write tests next | Gap Analysis | | Stop coverage from regressing in CI | Coverage as CI Gate → Ratchet Pattern | | Show per-PR coverage to reviewers | Coverage as CI Gate → PR Diff | | Tests run code but don't assert | Mutation Testing | | Decide what to exclude / what target to set | Meaningful vs Vanity Coverage | --- ## Discovery Questions Check `.agents/qa-project-context.md` first — if it exists, use it and skip anything already answered there. Then: …
Read the whole file at its exact version.
How to install
mdr add petrkindlmann/qa-skills/coverage-analysis@sha256:c3e1e60a893968bbThe line at the top of this page pins the label v2.0, 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_ptv3s5opyz7jysbb)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 10, 2026 and Jun 10, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.0 latest | 2026-06-10 | 5e772b2 | 18,863 B | A | view · diff |
| v2.0 | 2026-06-10 | bcd1201 | 18,830 B | A | view · diff |
| v1.0 | 2026-05-30 | d9b4edd | 14,547 B | A | view · diff |
| v1.0 | 2026-05-10 | f124fd9 | 19,790 B | A | view · diff |
| v1.0 | 2026-05-10 | a1e1025 | 19,620 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 (18863 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
petrkindlmann/qa-skills · 198 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ptv3s5opyz7jysbb GET https://markdownregistry.com/api/v1/resolve?ref=petrkindlmann/qa-skills/coverage-analysis GET https://markdownregistry.com/api/v1/blob/c3e1e60a893968bb49e4f0e66b9499d45827c7af1d3ebc32c9da4aeede2d9f7d
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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