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OAuth URL Builder

Construct OAuth 2.0 authorization URLs and token exchange cURL commands for Authorization Code, PKCE, Implicit, and Client Credentials flows. Runs entirely in your browser — your data never leaves your machine.

oauth auth url security api authentication

Published May 30, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Select a grant type, fill in your OAuth provider details (endpoints, client ID, scopes), and the tool generates the complete authorization URL and token exchange cURL command.

Features

  • 4 grant types: Authorization Code, PKCE, Implicit (legacy), Client Credentials
  • Provider presets: Google, GitHub, Microsoft, Auth0, Custom
  • Authorization URL: complete URL with all parameters properly encoded
  • Token exchange cURL: ready-to-use cURL command for token requests
  • PKCE support: code challenge method (S256/plain) and challenge value
  • 5 examples: Google, GitHub, PKCE, Client Credentials, Implicit
  • Private: runs entirely in the browser — no data transmitted

Use Cases

  • Prototyping OAuth 2.0 integrations quickly
  • Debugging authorization flow parameters
  • Generating correct authorization URLs for testing
  • Learning OAuth 2.0 flows and their differences
  • Building cURL commands for token exchange