The current Plex API reDoc docs can be found at https://developer.plex.tv/pms/ but the actual OpenAPI spec lives (currently) at “blob:https://developer.plex.tv/d0d815bf-a2e4-45e5-bc7e-1f2311f53a56”
This appears to be an unstable URL that is likely to change at any time. That assumption could be wrong; if this is a stable URL, then this could mostly be disregarded.
By comparison, this is the Jellyfin OpenAPI spec url https://api.jellyfin.org/openapi/jellyfin-openapi-stable.json
It is not versioned in the URL, but the URL is stable and we can check the “openapi: “3.0.1”,” key-value pair (as we can also do with Plex, assuming the URL is stable).
An ideal Plex OpenAPI Spec URL might look like this:
https://developer.plex.tv/pms/plex-openapi.json?version=1.2.2
