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JWT debugger.

Every verification below runs JWT::PQ::JWK.import and JWT.decode server-side against the real jwt-pq gem. No JavaScript reimplementation, no cached result. Share this page — token + JWK are posted over HTTPS and never stored.

post-quantum JWT debugger

Verify against the real gem.

Paste an alg: ML-DSA-* or alg: EdDSA+ML-DSA-* token plus its public JWK. Rails hands both to JWT::PQ::JWK.import and JWT.decode, then renders whatever the gem returns. No JavaScript crypto. No mock.

Load sample
01   Encoded token 0 bytes
02   Public JWK (kty: "AKP") 0 bytes
Idle — paste a token, or load a sample.
Header · JOSE
{
  /* header will appear here after verify */
}
Payload · Claims
{
  /* payload claims will appear here */
}