Postplan

Postplan is an easy-to-use platform to let AI agents easily upload HTML artifacts and static assets. Agents can write HTML blazingly fast, so the ability to iterate shouldn't be bottlenecked by tooling — Postplan removes that. Agents can read and write to your Postplan just with curl, so you don't need custom tooling. Postplan comes with agent skills that can steer agents to work according to your workflows. More importantly, Postplan is open-source, so you can own your content and assets.