---
title: "A label is attached to your parcel, whether we bought it or the floor scanned one in. One event per parcel per seller — three of your items in one box is one event, not three."
method: POST
path: "shipping_added"
---

# A label is attached to your parcel, whether we bought it or the floor scanned one in. One event per parcel per seller — three of your items in one box is one event, not three.

`POST shipping_added` (webhook)

Signed with HMAC-SHA256 over the exact request bytes, in the X-Signature header. Respond 2xx; anything else is retried with backoff.

## Headers

- `X-Signature` string, required

## Acknowledgement `200`

Acknowledged.

---

[API](https://skmtc.dev/opcreative/apis/opcreative-api.md) · [All operations](https://skmtc.dev/opcreative/apis/opcreative-api/llms.txt) · [OpenAPI document](https://skmtc.dev/opcreative/apis/opcreative-api/revisions/105bb30aa87e?raw)