New required fields added in schema BetaWebhookSessionThreadCreatedEventData: [session_thread_id]

What changed

New required fields added in schema BetaWebhookSessionThreadCreatedEventData: [session_thread_id] Affected surface: schema BetaWebhookSessionThreadCreatedEventData. Root cause: schema `BetaWebhookSessionThreadCreatedEventData`. Detected at Wed, 10 Jun 2026 02:23:03 UTC UTC.

Diff

{
  "added_required": [
    "session_thread_id"
  ],
  "path": "schema BetaWebhookSessionThreadCreatedEventData",
  "schema_path": "schema BetaWebhookSessionThreadCreatedEventData"
}

Likely impact

Existing integrations relying on this surface will fail or behave incorrectly. Treat this as a release-blocker until the recommended action below is applied.

Recommended action

Add the new required field to all request payloads or arguments. Requests omitting it will be rejected.