Get Usage

{
  "subscription_type": "free",
  "additional_credits_purchased": 123,
  "monthly_session_usage_minutes": 123,
  "monthly_session_steps": 123,
  "monthly_agent_steps": 123,
  "monthly_credits_limit": 123,
  "monthly_credits_usage": 123,
  "is_usage_limit_exceeded": true
}