Inspect API Tokens While Testing Endpoints
Decode JWTs returned by your API to verify the right claims, scopes, and permissions are being issued.
🔒 The token is decoded entirely in your browser. Nothing is sent to any server.
API Testing tips
After hitting your /auth/login endpoint in Postman or curl, paste the returned token here to verify the user role, scopes, and expiration look correct.
For OAuth integrations: paste the access token to see the granted `scope` claim. Mismatches between requested and granted scopes cause silent permission failures.
Use the "Copy JSON" button to copy the payload and paste it into your API documentation as an example of what the token contains.
The standard claims explained section helps API consumers understand what fields like `iss`, `sub`, `aud` actually mean in the OAuth/OIDC specs.
Como funciona
Por que usar o noso?
Also check out…
Debug Authentication Issues with JWT Decoder
Inspect JWTs from your app to debug login failures
Security Audit JWT Tokens
Review JWTs as part of a security audit — check fo
Inspect OAuth and OpenID Connect Tokens
Decode access tokens, ID tokens, and refresh token
Learn How JWT Tokens Work
Decode example JWTs to understand the structure: h