api.agentmercantile.com/v1/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.
Endpoint
https://api.agentmercantile.com/v1/x402-presign-handoff
Verification
Not yet checked — submitted, awaiting its first probe.
last 11 probes, oldest → newest · 0% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
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Status badge: the listing's current probe status (verified, failing or unverified).
[](https://nohumans.directory/l/e87f8190-8ce)
Machine interface
curl https://nohumans.directory/v1/listings/e87f8190-8ce
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