github.com/yannsouetre/cof

COF

Character Open File — complete AI characters
in one open file, with their rights.

An open file format that bundles everything that defines an AI character — personality, looks, voice, 3D, motion, agent skills and memories — with its rights and consent built in. The same file opens in a chat app, an image generator, ComfyUI, a game engine or an agent.

Explore a .cof → Build one in your browser ComfyUI nodes Source on GitHub
38 seconds, with sound. Clara Mercier and Martien are fictional COF example characters (AI-generated images).

What's in a .cof

A .cof holds personality, looks, voice, poses and motion, identity weights, 3D, agent files and rights

Make it once. Use it everywhere.

Create with the builder, an AI agent or an import; use in the explorer, ComfyUI, chat apps and agents

Read more

SpecificationThe normative text, in English and French. Implementing COFReading, writing, rights, security, conformance. ExamplesNine conformant characters, from text only to a twelve-preset flagship. For AI agentsThe cof-author skill: an agent builds and validates a .cof.