crosspost

crosspost is a Claude Code plugin built around one idea: write once, publish everywhere. You hand it a YouTube URL, a GitHub repository or a topic, it drafts a single canonical post in the voice described in your own voice.md, and then publishes it to every channel you have configured — LinkedIn, Facebook, Threads, X, Remember, Brunch, Naver Blog and Instagram. A channel runs only if its credentials are set, so nobody needs all eight. Optional per-channel variant files override the body for X or Threads while the canonical first line stays fixed. One command renders merged stats across every channel's ledger, and posts can be deleted on all channels or edited in place on five of them. Four channels use official APIs, Remember relies on an unofficial and experimental one, and Brunch and Naver Blog have no official API, so those use browser sessions. It requires Node.js 18+ and runs on macOS or Linux.