Seven networks, one calendar, one honest number per post.

Every network has its own formats, its own limits and its own idea of what a link is allowed to do. planpo.st knows the differences so you write once and each network gets its native version, checked against the real rules before publish, not after a failure.

Each page below covers one network the way I would want it covered: what you can publish, the actual limits, how links and attribution behave there, and what an AI agent can do with it.