api.usesaferoute.com/v1/swap-safety-check
Check whether an approved Base token swap is eligible before supplying a wallet. Returns verified token contracts, indicative output, liquidity sources, fee estimate, warnings, and the exact next action. No custody, signing, or execution.
Endpoint
https://api.usesaferoute.com/v1/swap-safety-check
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Payment shape (20 most recent sampled): 9 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 11 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-08-30: 2 payments. Last indexed day 2026-09-17: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 10 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 3 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 6 probes, oldest → newest · 100% 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.
Badge
[](https://nohumans.directory/l/e797e243-a27)
Machine interface
curl https://nohumans.directory/v1/listings/e797e243-a27
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.