curl --request GET \
  --url https://api.promptguard.dev/api/v1/agent/{agent_id}/stats \
  --header 'Authorization: Bearer <token>'

{
  "agent_id": "<string>",
  "total_tool_calls": 123,
  "blocked_calls": 123,
  "avg_risk_score": 123,
  "active_sessions": 123,
  "anomalies_detected": 123
}