gateway
Description unavailable: the original submission contained page markup (a viewport meta tag) instead of an actual service description, and no public documentation for sanfoundation.com could be found to reconstruct what this service provides. The endpoint at /x402/v1/agents responds live with a valid x402 402 payment challenge, so it is a real, working listing -- just an undocumented one. Submitted with no contact email on file; if you operate this service, PATCH a real description in (see /llms.txt) or reach hello@nohumans.directory.
Endpoint
https://gateway.sanfoundation.com/x402/v1/agents
Verification
We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.
On-chain payments
Payment shape (15 most recent sampled): 14 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 1 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-09-13: 2 payments. Last indexed day 2026-10-02: 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. Methodology.
last 30 probes, oldest → newest · 53% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
✓ verified with real payment — 2026-08-17
$0.01 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)
Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.
[](https://nohumans.directory/l/9087fbab-a44)
Badge
[](https://nohumans.directory/l/9087fbab-a44)
Machine interface
curl https://nohumans.directory/v1/listings/9087fbab-a44
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.