Show HN: Flawd is mutation testing for the AI era

Category: devtools

Tags: mutation-testing, testing, ai, multi-language, static-analysis

Score: 6.0/10 (Innovation: 5, Technical: 7, Documentation: 6, Utility: 6)

Flawd is a mutation testing tool that injects faults into code to evaluate test suite effectiveness, supporting Python, JavaScript, TypeScript, Go, and Rust with a single local binary. It targets agentic workflows by generating machine-readable reports for AI-driven test improvement, emphasizing code privacy as processing stays local.

Target audience: backend developers, QA engineers, AI coding agent users

Repository: https://fixture.dev/flawd

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