Developers API
Realtime Event Engine
WebSocket streaming, event webhooks, payload schemas, rule conditions, delivery lifecycle, signature verification, event history, and errors.
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Viewing: Error Codes
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.