Show HN: AiSniff, underline the phrases in a text that read like AI wrote them

Category: devtools

Tags: ai-detection, cli-tool, typescript, text-analysis, rule-based

Score: 6.3/10 (Innovation: 6, Technical: 6, Documentation: 8, Utility: 5)

AiSniff is a rule-based tool that underlines phrases in English and Chinese text matching documented AI-writing patterns, shipping as a web editor, CLI, and agent skill from shared JSON rules with no model calls. It's notable for its honest evaluation framing — reporting patterns rather than authorship, citing sources per rule, and openly publishing AUROC scores and false-positive rates that reveal its limits.

Target audience: writers, editors, and developers who want a lightweight lint-style check for AI-sounding phrasing in docs or content

Repository: https://github.com/Arthur031221/AiSniff · TypeScript · MIT

View on Hacker News