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SkillCI catches when a Claude model update silently breaks your Skill trigger stops firing, an instruction gets ignored, a redteam attack succeeds. Instead of just failing CI, it writes the failure as a permanent eval case you review and accept: catch once, covered forever. Also: OWASP-mapped local security lint, git-native bisect to find the breaking commit, and cross-model regression testing. Free, open source, single Go binary.
Hey PH 👋 Made this because I kept shipping Claude Skills that worked fine until Anthropic shipped a new model, and I'd only find out something broke by accident.
The thing I'm most proud of is the self-growing eval loop — a caught regression becomes a permanent test automatically, instead of a report you read once and forget. I haven't found another eval tool that does that for either red-teaming or fuzz-testing.
Honest gap: promptfoo has 50+ red-team attack plugins to my 16, and years of production hardening mine hasn't had yet. Not claiming to beat it outright — just that nothing else combines skill-aware security scanning + cross-model regression + git bisect + the self-growing loop in one tool.
Repo has a demo GIF near the top showing the actual catch → generate → accept loop. Would love feedback, especially from anyone running Claude Skills in production already.
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About SkillCI on Product Hunt
“Regression testing for Claude Skills”
SkillCI was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #141 on the daily leaderboard. SkillCI catches when a Claude model update silently breaks your Skill trigger stops firing, an instruction gets ignored, a redteam attack succeeds. Instead of just failing CI, it writes the failure as a permanent eval case you review and accept: catch once, covered forever. Also: OWASP-mapped local security lint, git-native bisect to find the breaking commit, and cross-model regression testing. Free, open source, single Go binary.
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