The Orders API upsert function allows for uploads of order batches. While the API has a hard limit of 1000 orders per call, we recommend using the order size per call that best suits your needs.

Rate limits

Order upload requests are rate-limited per API key by the total request-body size sent over a sliding time window.

Endpoint	Limit per API key
`POST /v1/orders`	30 MB per 60 seconds
`POST /v2/orders`	30 MB per 60 seconds
`PATCH /v2/orders`	30 MB per 60 seconds

The budget is shared across all three endpoints — bytes sent to any of them count toward the same 30 MB / 60 s window per API key.

Response when rate-limited

When the limit is exceeded, the API responds with:

HTTP status 429 Too Many Requests
Retry-After header with the number of seconds until you can retry

JSON body:

{
  "error": "rate_limit_error",
  "retry_after_seconds": 37
}