Hugging Face API Key Tester

Test any AI or API key in your browser — instantly see if it's valid, and why it isn't. Nothing is stored.

Test your Hugging Face access token with the whoami endpoint

Data verified 2026-07-13

Key format & how to get one

Prefix: hf_ Example: hf_abc123... Hugging Face access tokens start with hf_. 1. Sign in at https://huggingface.co 2. Open Settings > Access Tokens 3. Create a token and copy it (starts with hf_) 4. Read tokens are enough to test

How to test

  1. Copy your token from huggingface.co/settings/tokens (it starts with hf_).
  2. Paste it into the tester above and click Test Key.
  3. Green means valid; red shows the exact error and fix.

Common errors

CauseFix
Invalid or revoked access token.Create a new token at huggingface.co/settings/tokens.

Hugging Face API docs →

Related tools

Source Viewer

View a website's HTML source code on mobile devices, including Chrome on Android and iOS. Just paste a URL to view the page source — with line numbers.

Building with AI APIs? Elegant Atomics turns AI capability into B2B SaaS growth. Work with us →