Show HN: Grai, a single-file offline writing desk that measures your voice DNA

Category: ai-ml

Tags: writing-assistant, llm-prompts, content-detection, linkedin, agent-skill, open-core

Score: 4.8/10 (Innovation: 5, Technical: 4, Documentation: 6, Utility: 4)

Grai is a writing-quality tool that profiles a writer's 'Voice DNA' (sentence cadence, burstiness, lexical tells) and gates LLM-generated drafts against deterministic syntactic rules to strip out detectable AI-slop patterns. The open-source repo is essentially a marketing funnel: it ships only prompt/instruction markdown files, while the actual single-file workbench and scorer are paid commercial products.

Target audience: content marketers, ghostwriters, social media founders, prompt engineers

Repository: https://grai.page/ · Python · NOASSERTION · 6 stars

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