# User API keys specification

**URL:** https://meta.discourse.org/t/user-api-keys-specification/48536
**Category:** Integrations
**Tags:** rest-api, reference
**Created:** [August 12, 2016, 2:11am UTC](https://meta.discourse.org/t/user-api-keys-specification/48536 "2016-08-12T02:11:53Z")
**Posts on this page:** 1
**Showing post:** 79

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### Author: ![messiaslima](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/messiaslima/32/466278_2.png) [@messiaslima](https://meta.discourse.org/u/messiaslima)
#### Post date: [September 22, 2025, 10:30am UTC](https://meta.discourse.org/t/user-api-keys-specification/48536/79 "2025-09-22T10:30:43Z")

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After some investigation I found out that this issue was happening because I was using 4096 bits keys. I changed them to 2048 and it started working properly.

Is this key size a requirement? Is it documented somewhere?

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