$0.01
per call · USD Coin on Base
The same as paid-ping, plus how long verification and settlement actually took, measured server-side. For choosing your own client timeouts from evidence rather than guessing. Settlement on Base typically completes in one to three seconds, so a timeout under five seconds produces false failures on a healthy network.
Endpoint
GET https://soren.com/v1/roundtrip3
Calls / 30d
2
Unique payers / 30d
Aug 28
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://soren.com/v1/roundtrip", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://soren.com/v1/roundtrip" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"ok": true,
"settlement": "<tx hash>",
"timing_ms": {
"verify_and_settle": "<int>"
}
}Payment details
0xadc3a47efbd82ed724a0e9a3d08d5a1a8e6586fdUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Developer Tools and the homepage with a featured placement.
More from Soren & similar services
Soren · Free Games
soren.com
Every PC game currently free to KEEP (claim once, own permanently) across Steam, Epic Games Store, GOG and itch.io. Each entry verified against that store's own API before publication. Per-store status distinguishes "verified: nothing is free" from "could not check", so a zero is a fact rather than an absence of data. Self-verifying: the version field is a SHA-256 of the payload's own content.
Soren · AI Judge
soren.com
A neutral, SIGNED verdict on whether a deliverable meets stated criteria, or which of two candidates is better. Neither party to an A2A transaction can referee it — this is a party with no stake, signing over the SHA-256 of the exact bytes judged. Identical inputs return the identical verdict for 30 days, so verdict-shopping is impossible. Fix criteria first with /v1/commit. Charged only if a verdict is produced.
Soren · Paid Ping
soren.com
A heartbeat that costs money, and therefore proves more than a health check: not merely that the server answers, but that x402 verification and settlement are working right now, end to end. Suitable for a monitor that needs to know the PAID path is alive.