Oauth2 ClientCredentials Authorization hangs

For some reasons authorization with Oauth2 ClientCredentials only request the token, but not the actual api call. Imagine following code:

@host = https://api.de
@sb_clientId = ...
@sb_clientSecret = ...
@sb_tokenEndpoint = https://api.de/oauth/token

### Person
GET /foo
Authorization: oauth2 client_credentials sb

Both in CLI & vsc-plugin I see the request for obtaining an access token successfully executed, but the subsequent call for requesting /foo doesn’t happen. I tried the ‘Arbeitsagentur Jobbörse’ exmaple, there it worked. Any ideas what could be wrong or how to debug this?

btw. @sb_tokenEndpoint = /oauth/token or @sb_tokenEndpoint = {{host}}/oauth/token fails as well - why?

[AnWeber]

I did not expect 201. I will see what the spec says. Otherwise all statuses <400 should be valid. Only 200 is mentioned, your server does not conform to the spec. https://datatracker.ietf.org/doc/html/rfc6749#section-5.1

I will add <400 to the list of valid return codes.

[AnWeber]

I would simply increase the log level first. Add --debug or --verbose to your httpyac cli call. The “silent” abort actually only happens when an action cancels processing. With verbose you should see who started the processing last and there I would then set a breakpoint.