Coverage Analysis skill: what it does and how to install it
Measures which code a fuzzing corpus reaches with llvm-cov, gcovr or fuzzer-specific coverage tools, then identifies paths to investigate.
Summary generated from the skill's documentation.
Warning. A security audit flagged this skill with a high risk warning. Read its SKILL.md and scripts before you install it.
Install
$ npx skills add trailofbits/skills --skill coverage-analysisRun it in a terminal. If your agent is already running, start a new session so it picks the skill up.
About this skill
What it does. Guides coverage builds for C/C++ and Rust, runs a campaign corpus against an instrumented target, and generates text or HTML reports with LLVM tools or gcovr. It explains how to compare results and use uncovered regions to guide harness, seed and dictionary changes.
When to use it. Use it to establish a fuzzing baseline, investigate a plateau or check harness changes. Skip it when coverage infrastructure is unavailable or fuzzer metrics are sufficient.
History
Repo stars
7.4kAbout +216 since 9 Jul 2026
Before 1 Oct 2026 the curve is estimated from public event data.
Stars are counted for the whole repository, which holds 49 skills.
Show as a table
| Date | Repo stars |
|---|---|
| 5 Oct 2026 | 7,370 |
| 4 Oct 2026 | 7,355 |
| 3 Oct 2026 | 7,348 |
| 2 Oct 2026 | 7,340 |
| 1 Oct 2026 | 7,320 |
| 24 Sept 2026 (estimated) | 7,310 |
| 17 Sept 2026 (estimated) | 7,305 |
| 10 Sept 2026 (estimated) | 7,239 |
| 3 Sept 2026 (estimated) | 7,179 |
| 27 Aug 2026 (estimated) | 7,174 |
| 20 Aug 2026 (estimated) | 7,174 |
| 13 Aug 2026 (estimated) | 7,169 |
| 6 Aug 2026 (estimated) | 7,164 |
| 30 Jul 2026 (estimated) | 7,164 |
| 23 Jul 2026 (estimated) | 7,164 |
| 16 Jul 2026 (estimated) | 7,164 |
| 9 Jul 2026 (estimated) | 7,154 |
Installs
5.1k
Tracking since . A chart appears once there are 7 days of data.
Installs via skills.sh
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