Getting a HTTP 405 Error – Why Is My Request Method Not Allowed? or HTTP 405 Method Not Allowed – How

http 405 = "you’re doing it wrong" but the server’s too polite to say how.

Common culprits:
- Wrong HTTP method (like POSTing to a GET-only endpoint).
- Missing auth headers (some APIs freak out if you’re not logged in).
- Typos in the URL (yes, really).

Try the Mozilla HTTP docs—they break it down well.