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annatchijovaannatchijova/SKILLS/oracle-driven-fuzzing/SKILL.md

oracle-driven-fuzzing

Skill9 starsChanged 4 months agoLicence not identifiedView on GitHub

Search an input space too large to enumerate, with an oracle strong enough that the bug is visible when it is hit — property-based tests, structure-aware fuzzing, differential and metamorphic oracles, corpus and coverage discipline, shrinking, and crash triage that separates a reproducer from a finding. Use whenever bugs should be found by generated input rather than by reading — "fuzz this", "property-based", "hypothesis/quickcheck/proptest", "libFuzzer", "AFL", "differential testing", "generate test cases", "how do I test this parser/serializer/state machine", "it only breaks on weird input" — or when a crash corpus needs triage. Also trigger when a fuzzer "found nothing", and whenever a round-trip, an encoder/decoder pair, a cache, or a second implementation exists, because those are free oracles. Sibling of falsifiable-testing (hand-written tests) and discriminating-proof (confirming one hypothesis); this skill governs the automated search that generates them. It never calls a crash a vulnerability.

The file

We split this skill into the rules it gives an agent

6 rules. About 0 are common, 3 are distinctive, and 3 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈3

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 3

    Very specific

    Tied to their project's names, files or tools. Probably skip.

The licence could not be identified — read it at the source. We count its rules but don't quote them. Read them on GitHub.

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

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