curl --request GET \
  --url https://api.headlesscommerce.io/v1/.well-known/oauth-authorization-server

{
  "issuer": "<string>",
  "authorization_endpoint": "<string>",
  "token_endpoint": "<string>",
  "registration_endpoint": "<string>",
  "scopes_supported": [
    "<string>"
  ],
  "response_types_supported": [
    "<string>"
  ],
  "grant_types_supported": [
    "<string>"
  ],
  "token_endpoint_auth_methods_supported": [
    "<string>"
  ],
  "code_challenge_methods_supported": [
    "<string>"
  ],
  "service_documentation": "<string>"
}