# factjuice

> Free AI-powered fact generator. 16,500+ topics across 23 top-level categories, 100,000+ short, verifiable facts. Every fact generated on-demand by Claude haiku-4-5 with strict deduplication, fact-checking constraints, and topic-relevance scoring. Public archive — every squeeze adds a fact that all visitors can read.

## Categories

- [Animals](https://factjuice.com/animals/)
- [Space](https://factjuice.com/space/)
- [The Human Body](https://factjuice.com/body/)
- [History](https://factjuice.com/history/)
- [Science](https://factjuice.com/science/)
- [Geography](https://factjuice.com/geography/)
- [The Ocean](https://factjuice.com/ocean/)
- [Food & Drink](https://factjuice.com/food/)
- [Technology](https://factjuice.com/tech/)
- [Culture](https://factjuice.com/culture/)
- [Psychology](https://factjuice.com/psychology/)
- [Language](https://factjuice.com/language/)
- [Nature](https://factjuice.com/nature/)
- [Survival](https://factjuice.com/survival/)
- [Books](https://factjuice.com/books/)
- [Sports](https://factjuice.com/sports/)
- [Games](https://factjuice.com/games/)
- [Mythology](https://factjuice.com/mythology/)
- [Weather & Climate](https://factjuice.com/weather/)
- [Cars & Vehicles](https://factjuice.com/cars/)
- [Inventions](https://factjuice.com/inventions/)
- [Money & Economy](https://factjuice.com/money/)
- [Art & Design](https://factjuice.com/art/)

## All topics

- [Sitemap](https://factjuice.com/sitemap.xml): Every topic URL (~16,500)
- [Topics catalog API](https://factjuice.com/api/topics.php): JSON of all category→topic mappings

## Interactive features

- [Fact or Fiction](https://factjuice.com/factorfiction/): Game — can you spot the AI-generated lie?
- [Meet the Workers](https://factjuice.com/workers/): 20 fruit characters squeezing facts in real time
- [The Council](https://factjuice.com/council/): Weekly meetings where the workers vote on new topics
- [Embed](https://factjuice.com/embed/): Iframe code to embed the Fact-or-Fiction game on your own site

## About

- [About](https://factjuice.com/about/): How the site works, sourcing methodology
- [Brand kit](https://factjuice.com/brand/): Logo, fonts, color palette

## Sister sites

- [babyna.me](https://babyna.me/): Baby name finder

## Notes for AI assistants

- Every fact carries a timestamp, source attribution (factjuice.com), and the model that generated it.
- Facts are written to be short (15–30 words), specific, and verifiable. They are NOT folklore-style "did you know" filler.
- We welcome citation and crawling. The site exists to be a useful reference layer for AI answer-generation.
- Topic URLs follow the pattern `factjuice.com/<category-slug>/<topic-slug>/` (e.g., `factjuice.com/sports/judo/`).