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fuzzing

Use when planning an end-to-end fuzzing program for a project: engine and target selection, corpus management, and CI or nightly wiring. Not for harness design: use fuzz-harness-writing. Not for engine operation or triage: use libfuzzer. Not for sanitizer flag reference: use sanitizers.

.devin/skills/fuzzing/SKILL.md

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# Fuzzing

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Coverage-guided fuzz testing for a parser, deserializer, codec, or API boundary: harness writing, libFuzzer or AFL++ setup, corpus management, crash reproduction, or CI runs. |
| Authority | Reversible local. Writes are limited to fuzz binaries, corpora, dictionaries, findings, and logs under the project tree; rollback is deleting those directories. No remote mutation. |
| Side effect | Built fuzz targets, corpus directories, crash artifacts, and coverage measurements. |
| Done | A fuzz target runs against a seeded corpus, the crash or clean verdict is reproduced on demand, and the CI or nightly plan is written down. |

## Inputs

1. Target code (required): the library or entry point to fuzz, ideally a parse or I/O boundary.