Web Services API:
Introduction to the 'outside' interface of the Joomla Web Services API
The external API interface of Joomla is actual the way programs or AI may interface the web site addressing web site components. So you may want to know a bit more about it.
Another option for Access is an MCP server (Model Context Protocol) for AI, but that is a different story. By the way, actually Joomla prepares its own included MCP server but there are already a lot of independend sulotions with different purposes out there.
This article intends to introduce you to the general interface, how the URL parts and the response data looks like. It does not contain a list of component endpoints (Which component has which endpoints). You will find links at the end of the article to lists though.