Expand your world's depth with AI-generated lore that fits your campaign.
Codex Cryptica combines a local-first campaign wiki with an AI co-author that understands your world. Ask it to draft a new faction's history, suggest names for a city district, or write a rumour your party might hear — all grounded in the lore you've already written.
The AI reads your existing characters, locations, and factions before generating new content, keeping lore consistent.
Every generated entry links to related entities in your campaign graph — people, places, and events stay connected.
All your worldbuilding notes stay on your device. AI calls are direct to your API key — no data stored on Codex servers.
No account. No server database leaks. Just quick, private, local-first worldbuilding.
Launch Codex Cryptica