---
title: "Changes to POST /agent-commerce/ucp/checkout-sessions/{id}/complete"
method: POST
path: "/agent-commerce/ucp/checkout-sessions/{id}/complete"
---

# Changes to POST /agent-commerce/ucp/checkout-sessions/{id}/complete

`POST /agent-commerce/ucp/checkout-sessions/{id}/complete`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 7 revisions.

- **2026-11-09** `5c50dd5066f8`: 1 breaking
- **2026-10-18** `4990dc8b3ef4`: 1 info

## Changes

- **2026-11-09** `5c50dd5066f8`: 1 breaking
  - added the pattern `^(?:[A-Za-z0-9_'+\-]+\.)*[A-Za-z0-9_'+\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\-]*\.)+[A-Za-z]{2,}$` to the request property `buyer/email`
- **2026-10-18** `4990dc8b3ef4`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/mondoir/apis/mondoir-api/docs/agent-commerce/ucp/checkout-sessions/:id/complete/post.md) - [API](https://skmtc.dev/mondoir/apis/mondoir-api.md) - [Page](https://skmtc.dev/mondoir/apis/mondoir-api/changes/agent-commerce/ucp/checkout-sessions/:id/complete/post)