API

An API (Application Programming Interface) is the set of rules a platform exposes so external tools like PostRSS can read, post, or manage content on it programmatically. Every auto-posting feature ultimately depends on what a given platform's API permits, which is why some networks support full automation and others quietly don't. Posts under this tag dig into specific platform APIs, their rate limits, authentication requirements, and the gap between what's technically possible and what's officially supported. If you've ever wondered why one platform is easy to automate and another isn't, this is the tag that explains the mechanics behind it. Concrete examples include what X (Twitter) API access costs in 2026, how rate limits differ across networks, and using a custom webhook to reach services that have no integration at all.