Skill Coverage Gate

Q: What is a Claude Code skill and how does the Skill Coverage Gate skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Skill Coverage Gate is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: testing · Last updated: 2026-07-20

type:review

Use when reviewing, shipping, or regression-testing a SKILL.md and you hold one or more captured trajectories where that skill was actually loaded. Translates the skill's instructions into behavior constraints, then reports which were EXERCISED (coverage) versus untested, and flags any that were in-scope but VIOLATED (compliance) — a cheap single-trajectory test-adequacy gate. It surfaces untested instructions rather than auto-blocking, and escalates fail-closed only when a violation touches shared repo state, never-surface memory, or self-modification. Complements skill-counterfactual-audit (which measures EFFECT) and skill-causal-curation (which measures contribution); this one asks ADEQUACY. Backed by the agent-skill-coverage metric (arxiv 2606.20659v2). Triggers on skill review, ship gating, and regression-testing a skill against its trajectories.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Skill Coverage Gate includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section). The SKILL.md runs to about 865 words, in the catalog's typical mid-range.

Original author: Tibsfox
Indexed lastmod: 2026-07-20
Catalog position: Engineering · testing
Indexed related skills: 10

How Skill Coverage Gate fits the catalog

Skill Coverage Gate sits in the Engineering category under the testing sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Given a SKILL.md and one or more captured trajectories in which it was loaded, translate its instructions into discrete behavior constraints, then report — per constraint — whether the trajectory exercised it (coverage), left it untested, or violated it while in scope (compliance). This is a cheap, single-trajectory adequacy check that slots into the skill-forge ship/review loop before more expensive paired or masked evaluation is worth running.

What this skill does

Skill Coverage Gate is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/skill-coverage-gate/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when reviewing, shipping, or regression-testing a SKILL.md and you hold one or more captured trajectories where that skill was actually loaded.

Who uses this skill

The Skill Coverage Gate Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 154,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/skill-coverage-gate
curl -L https://claudskills.com/skills/skill-coverage-gate/SKILL.md \
  -o ~/.claude/skills/skill-coverage-gate/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/skill-coverage-gate/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/skill-coverage-gate/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\skill-coverage-gate\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Skill Coverage Gate Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/skill-coverage-gate/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Skill Coverage Gate skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Skill Coverage Gate skill?

Use Skill Coverage Gate when your Claude Code task falls under the Engineering category — specifically in the testing area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Skill Coverage Gate" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Skill Coverage Gate skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Skill Coverage Gate is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/Tibsfox/gsd-skill-creator/blob/HEAD/project-claude/skills/skill-coverage-gate/SKILL.md
Author: Tibsfox

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Tibsfox. (2026). Skill Coverage Gate [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/skill-coverage-gate/

BibTeX

@misc{skill-coverage-gate-2026,
  author    = {Tibsfox},
  title     = {Skill Coverage Gate [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/skill-coverage-gate/}
}

Embed this skill

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Badge

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Security scan

Grade A · scanned 2026-07-20 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/skill-coverage-gate/#security)

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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