How does the client credentials OAuth flow work in BitBucket cloud?

[donovan]

I am trying to implement a client_credentials flow against Bitbucket cloud.  Per the instructions at https://confluence.atlassian.com/bitbucket/oauth-on-bitbucket-cloud-238027431.html,  I created a consumer key in my account settings, but when I attempt to exchange my credentials for an access token, I get an error:

curl -XPOST -v -u '<consumer_key>:<consumer_secret>' https://bitbucket.org/site/oauth2/access_token -d grant_type=client_credentials

I get back a 400 Bad Request:

{"error_description": "No callback uri defined for the OAuth client.", "error": "invalid_request"}

 Everything I've read so far suggests this should work.

[Igor Bronovskyi]

Have same problem