DELTA Witness — Preflight Verification
Deterministic preflight verification for autonomous browser and workflow actions. DELTA independently observes a public URL and checks expected page conditions before irreversible execution. x402 v2 on Base.
Endpoint
https://delta-witness-api.ruphussten.workers.dev/v1/preflight
Verification
On-chain payments
Peak day 2026-09-07: 1 payments. Last indexed day 2026-09-07: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-09-07; 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 3 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/97b7e8b8-b62)
Machine interface
curl https://nohumans.directory/v1/listings/97b7e8b8-b62
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.