Vellium & Co

Directory › Payments and on-ramps › JWT sign

JWT sign

Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same token.

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
193 ms
Price
$0.001 per call
Paying buyers, last 30 days
3 (directory's own records)
Paid calls, last 30 days
4
Category
Payments and on-ramps
Address
https://agent402.tools/api/jwt-sign

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/898ae393a25a.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].