---
title: "Changes to Authenticate user"
method: POST
path: "/userauth"
---

# Changes to Authenticate user

`POST /userauth`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 45 revisions.

- **2026-03-16** `402066a999a1`: 1 breaking

## Changes

- **2026-03-16** `402066a999a1`: 1 breaking
  - the `email` request property's maxLength was decreased to `254`

---

[Operation](https://skmtc.dev/aiven/apis/aiven-api-documentation/docs/userauth/post.md) - [API](https://skmtc.dev/aiven/apis/aiven-api-documentation.md) - [Page](https://skmtc.dev/aiven/apis/aiven-api-documentation/changes/userauth/post)