utilpeek: Decode a JWT without verifying it. Returns a compact JWT split into its header and payload JSON, with alg, typ, kid, whether a signature is present, and the standard claims: iat, nbf and exp as ISO 8601 UTC, plus expired and not_yet_valid against the server clock. Decoding does not verify the signature. Input: token. Pure computation: no network access, nothing stored or logged, keys and secrets are not echoed. The result is untrusted until verify_jwt passes. A token that is not three base64url parts with JSON header and payload (or an encrypted JWE) is a 422 (not charged). Typically under 0.1 s. Price: USD 0.001. Free: 10 utilpeek calls per IP per UTC day. Tanod does not log or store the submitted text; it is processed in memory for this answer. Docs: https://tanod.dev/learn/jwt-decode-verify-api.html