Claimkit is a utility for who work with JSON Web Tokens
Claimkit is a utility for who work with JSON Web Tokens. It bundles common JSON Web Token tasks in a tabbed experience: generate signed tokens from headers, payloads, and a shared secret; decode tokens to inspect header and payload; check exp and related timing against the device clock; and adjust claims in a dedicated editor. The interface uses a dark gradient style and large navigation titles so long token strings stay readable on a phone. It is aimed at mobile debugging of authentication flows, quick token validation away from a desk, and anyone who wants to see how JSON Web Tokens are structured without opening a full desktop toolchain.