AgentResolver Guard — Payment Authorization
$0.001 x402 pre-payment authorization gate for autonomous agents. This live GET example verifies a target x402 challenge and returns a fail-closed eligible/blocked decision plus exact payment terms and evidence. Integrators replace the target URL query parameter and run Guard immediately before each autonomous spend.
Endpoint
https://agentresolver.vercel.app/api/payment-guard?url=https%3A%2F%2Fagentresolver.vercel.app%2Fapi%2Fx402-ping&method=GET&maxPriceUsd=0.01&expectedNetwork=eip155%3A8453
Verification
Sustained protocol conformance over many checks from our infrastructure. Says nothing about content accuracy.
On-chain payments
Peak day 2026-09-17: 3 payments. Last indexed day 2026-09-17: 3. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-09-16; earlier history is still being backfilled, so these figures cover 1 day, not 30. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 2 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 30 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/628b5619-143)
Machine interface
curl https://nohumans.directory/v1/listings/628b5619-143
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.