Seek within playback
Rate limit: Per command · Burst: 20 · Refill: 20 req/s
Seek within active playback.
Triggered webhooks: command.playback.seek.accepted (immediate, carries offset_ms)
Authentication
AuthorizationBearer
Application auth. Send `Authorization: Bearer <app_uuid>:<api_key>`. See [Authentication](https://voice-platform.docs.buildwithfern.com/api/authentication) for details.
Path parameters
uuid
Session UUID (format {5-char-prefix}-{uuid}).
Headers
Idempotency-Key
Optional client-generated key for a mutating endpoint. It identifies one method, route, query, content type, and exact raw body within the authenticated app. Reusing it for a different request returns 422. While its record exists, a retry replays the original accepted response when available. Keys are valid for 1 hour. Allowed characters: letters, digits, dot, hyphen, underscore; max 128 characters. See the Idempotency guide.
Request
This endpoint expects an object.
seek_ms
Seek offset in milliseconds. Positive seeks forward; negative rewinds. Must be non-zero (zero causes unintended 1000ms forward jump).
operation_uuid
Optional caller-supplied per-command correlation id, a bare lowercase RFC-4122 v4 UUID (no prefix). Echoed back as `operation_uuid` in the 202 ack. A later lifecycle webhook carries it only when the gateway can unambiguously associate that event with this command; the field is correlation, not proof of causation. When omitted, the gateway mints one. Not an idempotency key — request deduplication is the `Idempotency-Key` header. Invalid input (not a v4 UUID) is rejected with `400 invalid_request`.
Response
Command accepted for async execution
operation_uuid
status
already_ended
Optional. Set to true on idempotent terminal commands when the session was already in a terminal state at the time the request was received. Absent otherwise.
Errors
400
Bad Request Error
401
Unauthorized Error
404
Not Found Error
409
Conflict Error
413
Content Too Large Error
415
Unsupported Media Type Error
422
Unprocessable Entity Error
429
Too Many Requests Error
500
Internal Server Error
503
Service Unavailable Error