Exchange client credentials for an access token.
curl -i -X POST \
https://rfi.bndry.xyz/_mock/apis/openapi/v1alpha/tokens:generate \
-H 'Content-Type: application/json' \
-d '{
"grant_type": "string",
"client_id": "string",
"client_secret": "string"
}'
{ "access_token": "string", "token_type": "string", "expires_in": 0 }