Open source · Reference implementation

Open CKF

Reference open-source implementation of the Compiled Knowledge Format.

Compile any document into a structured CKF package (.ckf) — entirely in your browser, with your own API key. No accounts, no servers, no telemetry.

Industrial pipeline (chunk → map → reduce → validate). Bring your own key for OpenAI, Anthropic, Gemini, DeepSeek or OpenRouter.

No-key heuristic compiler — paste text, see a 23-section .ckf package generated locally with deterministic logic.

Drag any .ckf file to inspect sections, search, and trace each item back to the original source excerpt.

About the format

For the full format specification, reference docs, news and lab, visit the official site.