> For the complete documentation index, see [llms.txt](https://docs.catfee.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.catfee.io/en/api-reference/transaction/pay-order.md).

# Submit Payment Hash (Partner End-User Payment)

{% hint style="info" %}
Do not call this endpoint for Partner Balance Payment. It is only available to partners that have contacted CatFee customer support and enabled Partner End-User Payment.
{% endhint %}

{% openapi src="/files/JXQUb3rAUG5kFSlvK6LF" path="/v1/mate/open/transaction/pay/{order\_id}" method="post" %}
[mate-transaction-api.json](https://4164384423-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fa332YYkbT2p9snj9atS0%2Fuploads%2Fgit-blob-c232c1ff063865137f97ab75e34e74744087e16a%2Fmate-transaction-api.json?alt=media)
{% endopenapi %}