Founder Brief — Write Down What You're Actually Building

Most solo founders carry the strategy in their head, where it stays vague and unfalsifiable. This skill gets it onto disk: one page first, then nine documents that deepen it and a set of use cases that make it buildable, in an order where each one is answerable because the one before it exists.

Everything this skill writes is plain markdown in a brief/ within current working folder. Where those files end up afterwards — a wiki, a doc tool, a repo — is the founder's choice and none of this skill's business. Never propose, configure, or mention a publishing destination.

Outputs

Four things, in a brief/ folder at the project root: