Title: X publishing support - OpenPost Description: See how OpenPost handles X formats, setup needs, limits, and live-test notes. Canonical: https://openpo.st/platforms/x Source: [https://openpo.st/platforms/x](https://openpo.st/platforms/x) [All platforms](https://openpo.st/platforms) X OAuth 1.0a # Build an X reply chain with the right limit for each account. Draft, preview, and schedule X posts, links, media, and reply threads. OpenPost checks the limit for each connected account. This page is for people deciding whether OpenPost fits their X publishing workflow. **Implemented:** Publishing is implemented **Hosted service certification:** No Hosted service provider-format certification claim is current. [Platform guide](https://docs.openpo.st/providers/x) Formats and limits ## Different formats, different rules. OpenPost checks the text and media rules for the format you choose. | Format | Text | Media | | --- | --- | --- | | Post, thread, or link | 280 standard · up to 25,000 subscribed | Text only | | Image post | 280 standard · up to 25,000 subscribed | 1-4 JPEG, PNG, WebP, or GIF images | | Video | 280 standard · up to 25,000 subscribed | 1 MP4 or QuickTime video | ### Provider limits and scope - 280 weighted characters for standard accounts - Up to 25,000 weighted characters for verified Basic, Premium, or Premium+ accounts - Video: 140 seconds and 512 MiB standard; up to 4 hours and 16 GiB subscribed - Up to 4 images or 1 MP4 video - Your X API plan and limits still apply Connect and test ## Set up X in three checks. 1. Configure the X client ID, secret, and the exact OpenPost callback URL. 1. Enable OAuth 1.0a user authentication in the X developer portal. 1. Connect the X account from Social accounts, then publish a small test post. Known limits ## What can still block a post. - OpenPost uses standard limits when X cannot verify a connected account subscription tier. - Media publishing needs OAuth 1.0a access-token and secret pairs. - Polls, quote posts, and other format settings remain subject to the account API tier. **Account requirement:** An X developer app with OAuth 1.0a user authentication enabled. **Verification:** Check OAuth, account limits, and each post type you plan to use. ## Use the current callback address, permissions, and media setup. Social network developer pages change. The OpenPost guide lists the settings and checks you need now. [Read the X guide](https://docs.openpo.st/providers/x)