brianhuang822 / simple-jwt-claim-server

Getting JWT claims via endpoint

Simple-JWT-Claim-Server

Getting JWT claims via endpoint

Based off of: https://github.com/auth0/jwt-decode

Motivation

Too many libraries and online decoder but no way to quickly see if they are taking your token for malicious purposes. This repo uses no npm packages with the exception of express and node.

Setup

0. Have nodejs installed https://nodejs.org/en/

npm install

npm start

Alternative

Go into index.js, and copy from where it says "START COPYING HERE" and stop at "STOP COPYING HERE" and paste it into whatever javascript place you want.

Usage

host:3000/jwt=<your jwt token here>

Example:

localhost:3000/jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ

returns

[{"alg":"HS256","typ":"JWT"},{"sub":"1234567890","name":"John Doe","admin":true}]

For Alternative Setup

>>> getClaims("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ")
[{"alg":"HS256","typ":"JWT"},{"sub":"1234567890","name":"John Doe","admin":true}]