OAuth 2.0 Flow Debugger
v1.0.0Visualise OAuth 2.0 grant flows (authorization code, client credentials, implicit, PKCE) and decode access tokens.
Browser-based OAuth Debugger. All operations run locally — no data is sent to a server.
How to use- →Enter your input data and configure the operation settings.
- →Click Run to compute the result.
- →Use the Copy button to copy the output.
- →Try a preset from the example picker to see sample input.
Flow Sequence
- 1BrowserUser clicks 'Login'
- 2ClientRedirect → /authorize?client_id=…&response_type=code&redirect_uri=…&state=…
- 3Auth ServerUser authenticates and consents
- 4Auth ServerRedirect → client redirect_uri?code=AUTH_CODE&state=…
- 5ClientPOST /token — code=AUTH_CODE + client_secret
Server-side exchange
- 6Auth ServerResponse: { access_token, token_type, expires_in, refresh_token }