About Crosspost
Crosspost watches a tweet.app account and reposts new posts to X, automatically or after a quick review, using each person's own X developer keys.
Why it exists
Posting the same content to two networks by hand is tedious and error-prone. Crosspost removes the copy-paste step: write once on tweet.app, and let Crosspost carry new posts over to X — either the moment they appear, or after you approve each one.
How it works
You connect your tweet.app account, add the four OAuth 1.0a values from your own X developer app, and choose your posting behavior. Crosspost never uses a shared account: everything posts as you, under your own keys, and stays under your control. See the setup guide to get started.
Who makes it
Crosspost is built and run by MikeDemo as an independent service. It is not affiliated with, endorsed by, or sponsored by X Corp. or Operation Bluebird, Inc.