ToolVet
78trust / 100

Crypto Feed

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

x402 APIPassing, checked 1 h ago

Subscribe for 30 days to the change feed behind /crypto/scan: one cursor over the upstream advice ledger, all coins at once. Returns a handle and a cursor; polling is then free and unlimited: /crypto/feed/since returns every published change since your cursor — new signals, classification flips, status changes (PUBLISHED/STALE/INVALIDATED), score and entry-zone changes. Be first to know when the market state flips; the full advice per signal stays a separate paid call.

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

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

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
content-type: application/json

{}

Example response

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

Example response, 28 lines
{
  "coverage": {
    "coins": [
      "BTC-EUR",
      "ETH-EUR",
      "SOL-EUR"
    ]
  },
  "cursor": 1702,
  "event_kinds": [
    "new_signal",
    "classification_changed",
    "status_changed",
    "score_changed",
    "entry_zone_changed",
    "economics_changed",
    "execution_blockers_changed"
  ],
  "expires_at": "2026-08-28T09:00:00.000Z",
  "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14",
  "poll": {
    "body": {
      "cursor": 1702,
      "feed_handle": "9f2c4a1b7e0d3c6a8b5f2e14"
    },
    "endpoint": "/crypto/feed/since"
  }
}

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' \
  -H 'content-type: application/json' \
  --data-raw '{}'

# 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' \
  -H 'content-type: application/json' \
  --data-raw '{}' \
  | 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&method=POST
const res = await pay("https://agentdata-api.sander-van-aard.workers.dev/crypto/feed", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({}),
});
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",
        json={},
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402497 ms$2.00
6 h agoPassed402174 ms$2.00
12 h agoPassed402160 ms$2.00
17 h agoPassed402170 ms$2.00
22 h agoPassed402137 ms$2.00
Show 10 older checks
26 h agoPassed402182 ms$2.00
31 h agoPassed402183 ms$2.00
36 h agoPassed402264 ms$2.00
40 h agoPassed40287 ms$2.00
45 h agoPassed402146 ms$2.00
2 days agoPassed40260 ms$2.00
2 days agoPassed402129 ms$2.00
2 days agoPassed402212 ms$2.00
3 days agoPassed402206 ms$2.00
3 days agoPassed402158 ms$2.00