Passthrough Spotify Web API always returns 429 "Too Many Requests"

[PaulVanSchayck]

I had been using the Spotify Web API through the go-librespot API service. This was working great, but recently all my requests have started to return 429 Too many requests. Even when doing a fresh request afters hours of inactivity.

I'm doing this request:

$ curl -v http://localhost:3678/web-api/v1
*   Trying 127.0.0.1:3678...
* Connected to localhost (127.0.0.1) port 3678 (#0)
> GET /web-api/v1 HTTP/1.1
> Host: localhost:3678
> User-Agent: curl/7.88.1
> Accept: */*
> 
< HTTP/1.1 429 Too Many Requests
< Vary: Origin
< Date: Wed, 07 Jan 2026 21:56:28 GMT
< Content-Length: 0
< 
* Connection #0 to host localhost left intact

Doesn't seem to matter which Web API endpoint I try to use. Restarting go-librespot doesn't help. Anyone seen the same? Has Spotify changed things? I can use the Web API with the same account through https://developer.spotify.com/ just fine. I've also tried re-authenticating go-librespot (running in interactive mode).