ToolVet
80trust / 100

Crypto Orderbook

by SiteCheck in Onchain & crypto

x402 APIPassing, checked 1 h ago

A level-2 order book snapshot for a Coinbase pair: best bid and ask, mid price, spread in price and basis points, and the top bids and asks up to depth 50. It is a snapshot, not a quote: prices move between calls. Information only, not financial advice.

GET
https://api.sitecheck-api.workers.dev/api/crypto/orderbook
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
70 ms
152 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

How to call it

GET https://api.sitecheck-api.workers.dev/api/crypto/orderbook

Each call costs $0.002 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.

GET https://api.sitecheck-api.workers.dev/api/crypto/orderbook?depth=5&pair=BTC-USD

Parameters

ParameterTypeRequiredDescription
depthstringNo1 to 50 levels per side (default 10)
pairstringYesCoinbase product, e.g. BTC-USD

Example response

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

Example response, 32 lines
{
  "asks": [
    {
      "price": 83645.78,
      "size": 0.0000633
    },
    {
      "price": 83651.5,
      "size": 0.09563486
    }
  ],
  "bestAsk": 83645.78,
  "bestBid": 83645.77,
  "bids": [
    {
      "price": 83645.77,
      "size": 0.50964207
    },
    {
      "price": 83644.1,
      "size": 0.01669213
    }
  ],
  "checkedAt": "2026-10-14T04:49:20.542Z",
  "depth": 5,
  "disclaimer": "Information only, not financial advice.",
  "mid": 83645.775,
  "pair": "BTC-USD",
  "source": "Coinbase Exchange public order book (level 2, snapshot)",
  "spread": 0.01,
  "spreadBps": 0.0012
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/crypto/orderbook?depth=5&pair=BTC-USD'

# 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 - 'https://api.sitecheck-api.workers.dev/api/crypto/orderbook?depth=5&pair=BTC-USD' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fcrypto%2Forderbook
const res = await pay("https://api.sitecheck-api.workers.dev/api/crypto/orderbook?depth=5&pair=BTC-USD");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/crypto/orderbook?depth=5&pair=BTC-USD")
    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 agoPassed40286 ms$0.002
6 h agoPassed40282 ms$0.002
10 h agoPassed402152 ms$0.002
14 h agoPassed40251 ms$0.002
18 h agoPassed40270 ms$0.002
Show 3 older checks
23 h agoPassed40238 ms$0.002
27 h agoPassed402135 ms$0.002
31 h agoPassed40249 ms$0.002