Show HN: LangDrift – test AI agents across languages

Category: devtools

Tags: ai-testing, localization, cli-tool

Score: 6.5/10 (Innovation: 6, Technical: 6, Documentation: 8, Utility: 6)

LangDrift is a CLI tool for testing whether AI agents preserve behavior across languages by running locale-aware scenarios and checking tool calls, arguments, and responses. It addresses the emerging need for localized AI agent testing with a structured, reproducible approach and includes detailed documentation, examples, and CI integration.

Target audience: backend devs

Repository: https://github.com/RubenGlez/langdrift · TypeScript · MIT

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