verify_before_pay — pre-payment endpoint check
Call this before your agent authorizes any x402 payment. One query returns route: true/false/inconclusive with evidence: is the endpoint live right now, does its 402 contract match what you expect (network, asset, seller, price), has it settled real volume recently from wallets that aren't its operator's, and how its price compares. The independent pre-payment check no seller can self-report. Reports no success rate, deliberately: Paddock observes settlements, not failed calls, so recency and frequency are returned instead.
Endpoint
https://paddock.finance/api/paddock/mcp/verify-before-pay?endpoint_url=https%3A%2F%2Fpaddock.finance%2Fapi%2Fpaddock%2Fmcp%2Fgaps&expect_network=eip155%3A8453
Verification
On-chain payments
Payment shape (8 most recent sampled): 8 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-08-17: 3 payments. Last indexed day 2026-09-01: 2. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 5 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://api.nohumans.directory/l/a8009ed4-abe)
Machine interface
curl https://api.nohumans.directory/v1/listings/a8009ed4-abe
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.