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Auth0

Easy to implement, adaptable authentication and authorization platform

Authentication
API Key
HTTPS
Yes
CORS
Yes
Documentation / URL
https://auth0.com

Overview

Auth0 provides auth platform APIs — per-tenant domains (a placeholder tenant returns 404, verified).

Quick Start

Token (replace YOUR_TENANT):

curl -X POST "https://YOUR_TENANT.auth0.com/oauth/token" \
  -H "Content-Type: application/json" \
  -d '{"grant_type":"client_credentials","client_id":"YOUR_ID","client_secret":"YOUR_SECRET","audience":"https://YOUR_TENANT.auth0.com/api/v2/"}'

Authentication

  • Auth0 tenant → client_id + client_secret.
  • All endpoints live under your tenant’s domain.

⚠️ Gotcha (verified): a placeholder tenant returns 404 “Unknown host” — use your real tenant.

Rate Limits & Notes

  • Free tier with limits (check the docs); paid plans scale.
  • Auth/authorization.

FAQ

Is Auth0 free? Free tier with limits; more is paid.

Why 404? The tenant host was a placeholder (verified) — use your tenant.

What’s the auth style? OAuth 2.0 (per-tenant).

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