ToolVet
78trust / 100

Feed Renew

by agentdata-api.sander-van-aard.workers.dev in Onchain & crypto

x402 APIPassing, checked 59 min ago

Extend an existing crypto change-feed subscription from /crypto/feed by 30 days, using the same feed_handle. Renewing before the expiry date adds the days on top of the remaining time, so polling never has a gap; renew late and the month starts today. Your cursor lives on your side and is unaffected.

POST
https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew
Price
$2.00
per call in USDC
Uptime
100%
last 30 days
Response time
174 ms
321 ms slowest 5%
Last check
Passed
59 min ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew

Each call costs $2.00 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew
content-type: application/json

{
  "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14"
}

Example response

The provider's example. We can't check it without paying.

{
  "checked_at": "2026-07-29T09:00:00.000Z",
  "expires_at": "2026-09-27T09:00:00.000Z",
  "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $2.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew' \
  -H 'content-type: application/json' \
  --data-raw '{"feed_handle":"9f2c4a1b7e0d3c6a8b5f2e14"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew' \
  -H 'content-type: application/json' \
  --data-raw '{"feed_handle":"9f2c4a1b7e0d3c6a8b5f2e14"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $2 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$2" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $2 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagentdata-api.sander-van-aard.workers.dev%2Fcrypto%2Ffeed%2Frenew&method=POST
const res = await pay("https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $2 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$2"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew",
        json={
            "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14",
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

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59 min agoPassed402180 ms$2.00
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21 h agoPassed402172 ms$2.00
Show 10 older checks
26 h agoPassed402177 ms$2.00
31 h agoPassed402204 ms$2.00
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44 h agoPassed402148 ms$2.00
2 days agoPassed402156 ms$2.00
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3 days agoPassed402174 ms$2.00
3 days agoPassed402175 ms$2.00