Auth and API Debugging Tools for Headers, Tokens, and Payloads
Fix auth headers, bearer tokens, query params, and payloads from one browser toolbox.
Start from the debugging problem, not the tool name, then jump into the right ComUtil utility in one click.
Create or inspect a Basic Auth credential string without leaving the browser.
Inspect claims, surface exp and iat, and understand bearer token failures faster.
URL encoding for auth flows
Encode redirect_uri values, callback URLs, and nested query params safely.
JSON API response formatting
Clean up request or response payloads with tree view editing and validation support.
My Authorization header is failing.
Start with the Base64 guide when the request uses Basic auth or a copied credential string.
Debug Basic Auth
My bearer token looks valid but the API still rejects it.
Use the JWT guide to inspect alg, exp, aud, scope, and sub before you assume the server is wrong.
Inspect the JWT
An OAuth callback or query string keeps breaking.
Use the URL guide when redirect_uri, nested URLs, or scope strings need percent-encoding.
Fix URL encoding
I need to read or clean up an API payload.
Use the JSON guide for tree view inspection, request-body cleanup, and Python dict recovery.
Format the payload
1. Credentials
Build or decode the Basic Auth value before the request ever leaves your machine.
2. Token
Inspect JWT claims, timestamps, and bearer-token structure when auth fails upstream.
3. Request URL
Encode redirect_uri values, callback URLs, and parameter components precisely.
4. Payload
Format or validate request and response JSON before you compare or resend it.