3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
JWT decoder: decode a JSON Web Token without verifying it: returns the header, the claims, the signature length and algorithm, and a computed view of the time claims — whether exp has passed, whether nbf is in the future...
JSON Web Token (JWT) decoder — parse an unverified compact JWS header and claims and evaluate advisory NumericDate times without signature verification or URL fetching.
JWT decoder and expiry check in one GET: pass a JSON Web Token and get its decoded header and payload, whether exp has passed, the seconds until or since expiry, and iat/nbf/iss/sub/aud/jti where present. curl: GET /jwt?...