curl --request POST \
  --url https://api.example.com/v1/webhooks \
  --header 'Content-Type: application/json' \
  --data '
{
  "events": [
    "whale_alert",
    "analysis_complete"
  ],
  "secret": "whsec_abc123def456",
  "url": "https://my-agent.example.com/webhooks/rekko"
}
'

{
  "created_at": "2026-03-20T10:00:00Z",
  "enabled": true,
  "events": [
    "whale_alert",
    "analysis_complete"
  ],
  "failure_count": 0,
  "url": "https://my-agent.example.com/webhooks/rekko",
  "webhook_id": "wh-f47ac10b58cc"
}