---
title: "About — Crosspost"
description: "Crosspost is an independent service by MikeDemo that reposts tweet.app posts to X using your own developer keys."
canonical: "https://tweet.mikedemo.dev/about"
last-updated: "2026-10-03"
---

# 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.

## 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.

## Learn more

- [Setup guide](https://tweet.mikedemo.dev/docs/setup)
- [Security](https://tweet.mikedemo.dev/docs/security)
- [Changelog](https://tweet.mikedemo.dev/changelog)
- [Contact](https://tweet.mikedemo.dev/contact)