---
title: "Changes to Get USDC Authorization Message (EVM only)"
method: POST
path: "/checkout/evm/usdc-authorization"
---

# Changes to Get USDC Authorization Message (EVM only)

`POST /checkout/evm/usdc-authorization`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 43 revisions.

- **2026-09-17** `81b590227b14`: 1 warning, 1 info
- **2026-09-12** `66b771d6d31f`: 1 info
- **2026-08-22** `c6be39c0cb2f`: 1 warning

## Changes

- **2026-09-17** `81b590227b14`: 1 warning, 1 info
  - deleted the `header` request parameter `x-coinflow-auth-session-key`
  - the endpoint scheme security `sessionKey` was added to the API
- **2026-09-12** `66b771d6d31f`: 1 info
  - api operation id `get-usdc-authorization-message` removed and replaced with `checkout_GetUsdcAuthorizationMessage`
- **2026-08-22** `c6be39c0cb2f`: 1 warning
  - the `amount/cents` request property's min was set to `0.00`

---

[Operation](https://skmtc.dev/coinflow/apis/api-reference/docs/checkout/evm/usdc-authorization/post.md) - [API](https://skmtc.dev/coinflow/apis/api-reference.md) - [Page](https://skmtc.dev/coinflow/apis/api-reference/changes/checkout/evm/usdc-authorization/post)