Developers API
Realtime Event Engine
WebSocket streaming, event webhooks, payload schemas, rule conditions, delivery lifecycle, signature verification, event history, and errors.
Error Codes
Error codes for WebSocket and Realtime Event Engine endpoints.
WebSocket
| Code | Meaning |
|---|---|
| 4000 | Generic connection or server failure |
| 4001 | Invalid or missing API key |
Realtime Event Engine
| HTTP | Error Code | Meaning |
|---|---|---|
| 403 | PLAN_LIMIT | Plan lacks access to Realtime Event Engine or event limits were reached. |
| 400 | VALIDATION | Invalid payload field or unsupported query option. |
| 404 | NOT_FOUND | Webhook, rule, or history record does not belong to this developer. |
Error envelope is typically returned as {"error":{"code","message|details"}}, with minor variation by endpoint.