Background
- **Semantic Manifest** is a proposed open standard that lets website owners tell AI crawlers (ChatGPT, Bard, Perplexity) which content to ingest and how to interpret it — a machine-readable permission file for AI training and retrieval.
- It fills a gap left by `robots.txt`, which only controls URL-level access and says nothing about meaning, attribution, or licensing. Semantic Manifest adds signals: what a page is about, whether it may be used for training vs. retrieval, who to credit, and what license applies.
- Hosted on GitHub by user CKL75 as a community-driven alternative to the proprietary crawler policies large AI companies impose. It aims to give creators a standardized way to declare intent amid widespread web scraping for AI training.
- Why it matters: As training data becomes contested, an open, adoption-friendly spec could become the de facto "license header" for the web — analogous to how `robots.txt` became standard for search engines. Without it, the default is ambiguity and litigation.