X402 — Web Search
Neural web search for agents (Exa upstream): pass a query, get the most relevant live web pages with title, URL, published date, author, relevance score and a clean text snippet as structured JSON. The find-then-read pair for /web-extract — RAG retrieval, research, fact-finding, monitoring. Keyless, pay-per-call, cached by query. A no-match query returns an empty result set as a valid answer.
Endpoint
https://x402.ottoai.services/web-search
Verification
We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.
On-chain payments
Payment shape (25 most recent sampled): 25 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 2026-09-08: 712 payments. Last indexed day 2026-10-05: 118. 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 72 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 on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
✓ verified with real payment — 2026-09-15
$0.009 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/ba45685c-90a)
Badge
[](https://nohumans.directory/l/ba45685c-90a)
Machine interface
curl https://nohumans.directory/v1/listings/ba45685c-90a
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.