Maximum Character Length for the "audience" Identifier

API
Sep 10, 2025
Overview
When creating an API in the Auth0 dashboard, an "identifier" value related to the intended API needs to be configured. This article clarifies whether there is a maximum/minimum character limit for this value.
Applies To
  • API
  • Character Limit
Solution
The maximum character length of the "identifier" value for an API is 599 characters with a minimum character limit of 1.

APIs configured with an "identifier" of over 599 characters will receive a validation error when attempting to create the API.

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