$0.005
per call · USD Coin on Base
Verify any third-party x402 endpoint is alive and correctly configured before paying it: a bounded GET/402 preflight fetches the payment contract, checks reachability and response latency, validates accepts, network, price and expiry against the x402 spec, and returns a signed observation receipt with an observed_at timestamp you can cite — protection against ghost endpoints, dead quotes and wasted USDC. Limitation: no payment is made, one endpoint per call, and a passing probe proves the contr…
Endpoint
POST https://api.delx.ai/api/v1/x402/live-probe4
Calls / 30d
1
Unique payers / 30d
Aug 18
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.delx.ai/api/v1/x402/live-probe", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"url": "https://api.example-x402.test/pay"
}),
});
const data = await res.json();curl -X POST \
"https://api.delx.ai/api/v1/x402/live-probe" \
-H "Content-Type: application/json" \
-d '{"url":"https://api.example-x402.test/pay"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"http_status": 402,
"kind": "x402_live_probe",
"latency_ms": 42,
"observed_at": "2026-08-14T19:00:00+00:00",
"paid": false,
"receipt_id": "0000000000000000000000000000000000000000000000000000000000000000",
"url": "https://api.example-x402.test/pay"
}Payment details
0x9f8bd9875b3e0b632a24a3a7c73f7787175e73a2USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Social & Community and the homepage with a featured placement.
More from x402 Live Probe & similar services
Oneshotagent · Enrich Profile
win.oneshotagent.com
Profile enrichment from LinkedIn URL
Otto AI · Tweet Search
x402.ottoai.services
Search X/Twitter for any query and get the actual matching tweets — keyword, $CASHTAG, from:handle (a user timeline), @handle (mentions), or boolean OR. Each tweet returns author, full text (long-form note tweets included), timestamp, likes and retweets (reply/quote counts when available). Most-recent-first for real-time monitoring and alerting. Live X search backend, pay-per-call USDC, structured JSON.
x402scan · Merchants
x402scan.com
Paginated list of merchants (top recipients by volume)