leaperone/MultiPost-Extension — reverse-engineered prompt

Build me a browser extension like MultiPost that lets someone write a post once and publish it to a bunch of social platforms in one click. It should handle common post types like text, images, and video, and feel aimed at creators or marketers who are tired of copying the same content everywhere.

I want it to work without making users sign up for a separate account or paste in API keys, and it should be free to use. Include support for a good number of major platforms, especially the ones mentioned in the project like Zhihu, Weibo, Xiaohongshu, Douyin, YouTube, and TikTok if that’s already what this repo is doing.

Also include both ways to trigger posting, one from inside the extension for normal users, and one developer friendly option so a web app, script, or server can call it through an extension API and a REST style API. Make the extension polished, localized if the repo already supports that, and ready to run. Look up current browser extension docs online if you need to.