Borrowing it
Nothing to install: this file belongs to floor/vlist. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/floor/vlist/main/.claude/skills/coverage-gaps/SKILL.mdgit clone --depth 1 https://github.com/floor/vlistWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/floor/vlist/coverage-gaps)<a href="https://agentmods.dev/skills/floor/vlist/coverage-gaps"><img src="https://agentmods.dev/badge/skills/floor/vlist/coverage-gaps/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/floor/vlist/coverage-gaps"><img src="https://agentmods.dev/badge/skills/floor/vlist/coverage-gaps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00018 | $0.00377 |
| Opus 5.5 | $0.00007 | $0.00151 |
| Sonnet 5.5 | $0.00004 | $0.00075 |
| Haiku 4.5 | $0.00002 | $0.00038 |
Grade A, and why
coverage-gaps scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Find Coverage Gaps
Identify untested code in the vlist project.
Instructions
-
Determine scope:
- If
$ARGUMENTSnames a feature (e.g.,grid,async), run coverage for that feature's tests - If
$ARGUMENTSnames a file path, run coverage for tests covering that file - If no arguments, run full coverage
- If
-
Run coverage:
- Scoped:
bun test --coverage test/features/$ARGUMENTS/ 2>&1orbun test --coverage $ARGUMENTS 2>&1 - Full:
bun test --coverage 2>&1
- Scoped:
-
Parse the coverage output and report:
- Files with less than 100% line coverage, sorted worst-first
- For each gap, read the source file and identify which functions/branches are likely uncovered
- Suggest specific test cases that would close the gaps
-
Output format:
## Coverage Gaps ### src/features/async/feature.ts — 87% lines - `handleLoadError()` (lines 45-62) — no test for error path - Suggested test: "should handle adapter rejection gracefully" ### src/rendering/renderer.ts — 92% lines - `recycleElement()` (lines 120-128) — pool-full branch untested - Suggested test: "should discard element when pool is at capacity" -
If everything is at 100%:
Full coverage — no gaps found.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 42 lines · 18 tokens per session scan A 64bf8fd1e3e4
coverage-gaps is a skill published in the GitHub repository floor/vlist (18 stars, last pushed 9d ago), licensed MIT. It adds 18 tokens to every session and 377 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.
Other skills, from other repositories
github-copilot-upgrader
Use this to update the Github Copilot CLI/SDK.
typescript
TypeScript strict mode with eslint and jest.
authoring-data-quality-checks
Adds and runs data quality checks (dbt-test style assertions) on a project's warehouse tables and saved-query views, and HogQL catalog metrics: not-null, uniqueness, accepted values, referential integrity, row-count bounds, freshness, and custom HogQL. Metrics support custom SQL checks only. Use when asked to test a…
jest-unit
Unit testing skill using Jest for TypeScript and JavaScript, covering mocking, spies, snapshots, coverage, async testing, and custom matchers.
Jasmine Testing
BDD-style JavaScript testing with Jasmine covering spies, async patterns, custom matchers, clock manipulation, and comprehensive test organization for frontend and Node.js applications.
vitest-skill
Generates Vitest tests in JavaScript/TypeScript with Vite-native speed. Jest-compatible API with ESM support and HMR. Use when user mentions "Vitest", "vi.mock", "vitest.config". Triggers on: "Vitest", "vi.mock", "vi.fn", "Vite test", "vitest config".