Overlong validity window (1 year)

Quirk · GET /api/x402/overlong-validity · 402 / Challenge Construction

Sets maxTimeoutSeconds to a full year, widening the replay window.

Explanation

maxTimeoutSeconds is set to a full year, leaving a signed quote replayable for far longer than is safe. The merchant should tighten the validity window to a reasonable duration.

What to watch

A signed quote stays usable for far too long.

Facilitator

Settled against the live Radius testnet facilitator (https://facilitator.testnet.radiustech.xyz). A valid payment runs a real /verify and /settle on-chain.

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