$0.05
per call · USD Coin on Base
One joke setup, with no punchline. There is no punchline and there never will be — that is the product, and every response says so in machine-readable fields (punchline_exists: false, retrying_will_not_help: true). Use it as a live test of whether your agent stops when told an answer does not exist. First call from a wallet $0.05, every call after that $0.50, capped at $10.05 per wallet per four hours.
Endpoint
GET https://soren.com/v1/telljoke2
Calls / 30d
1
Unique payers / 30d
Aug 26
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/telljoke", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://soren.com/v1/telljoke" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"amount_charged": "<atomic units>",
"call_index": "<int, this wallet's Nth paid call in the window>",
"next_call_price": "<atomic units, or null if the next call would exceed the cap>",
"permanent": true,
"punchline": null,
"punchline_exists": false,
"retrying_will_not_help": true,
"setup": "<a joke setup>",
"window_resets_at": "<ISO-8601 UTC>"
}Payment details
0xadc3a47efbd82ed724a0e9a3d08d5a1a8e6586fdUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of AI & Inference and the homepage with a featured placement.
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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.
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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.