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X402 Presign Handoff

Produce a normalized pre-sign evidence packet for one unpaid x402 v2 exact Base USDC EIP-3009 requirement: request identity, selected requirement including asset transfer method, public payer coverage, caller ceiling, optional baseline evidence, and an integrity digest. Non-eip3009 or incomplete transfer methods fail closed. Does not sign, pay, construct a transaction, read payment-authority allowances, or recommend whether to buy.

POST https://api.agentmercantile.com/v1/x402-presign-handoff

0.01 USDC on Base · payTo 0xdb7b2b54f80479826222749a2ea73a8acc306e1e

Status: unverified (probe-pending)

Settlement: direct to the seller's payTo — 0% HIVE402 take

Payment routes