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ConsiderationProperty-Based TestingHook Development
TypeSkillSkill
PublisherHenrik Brodin / Trail of BitsAnthropic
StatusPublisher skillAnthropic plugin
Best forFunctions with an invariant, round trip or trustworthy oracle across an input domain.Adding event-triggered workflow automation to a plugin.
RequirementsClaude Code with plugin support.; Code and existing test suite to inspect.; An appropriate property-testing library before running generated tests; installation does not add one.Install the containing Plugin Dev package
LimitationsPassing generated cases is not a proof of correctness; properties need a valid input model and oracle.; The source excludes end-to-end UI testing and coverage-guided binary fuzzing.This is an authoring skill, not a ready-to-run hook; Validate generated examples against your installed Claude Code version
Install packageproperty-based-testingplugin-dev
LicenseCC-BY-SA-4.0Apache-2.0
Source reviewed2026-10-052026-10-05

Bundled components may share an install package. Installing that package once provides its components.

Source review: October 5, 2026. Listings are documentation reviews, not runtime tests or security audits. Our editorial method