Audit JWT claim names, expiry, and identifiers at an explicit reference time without returning claim values

Audit JWT claim names, expiry, and identifiers at an explicit reference time without returning claim values. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller rem…