An on-demand encyclopedia of fictional topics: articles are LLM-generated at first request and permanently stored, navigable by clicking linked terms or URL slugs.
Key Takeaways
Articles are generated on first access and stored permanently; subsequent visits return the same cached entry.
Navigation works via hyperlinked terms inside articles, a Stumble button for random existing entries, or arbitrary URL slugs (e.g. halupedia.com/any-slug).
Coverage includes fabricated historical events, persons, organizations, treaties, and scientific disciplines, all written in standard encyclopedic style with fake citations.
Minor inconsistencies between linked entries are acknowledged as a known characteristic, not treated as errors.
Suggested seed entries include things like “Chaldic Arithmetic” and “The Ministry of Slightly Wrong Maps” to bootstrap the graph of linked articles.
Hacker News Comment Review
Commenters quickly discovered that typing arbitrary URL slugs generates new articles on demand, effectively making the URL bar the search interface the site lacks natively.
A noted structural weakness: generated pages do not inherit context from the pages that link to them, so cross-article coherence is limited to coincidence rather than design.
Self-referential links are a recurring bug; some articles link back to themselves, breaking the encyclopedia graph metaphor.
Notable Comments
@cachius: Asked the encyclopedia to explain its own inner workings and risks, then linked both generated articles as live demos of the concept eating itself.
@petercooper: Flags the real-world risk: Google AI Overview may soon surface Hallucinopedia entries as factual results for obscure queries.
