ToolVet
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Crypto Orderbook

by Crypto order book in Onchain & crypto

x402 APIPassing, checked 2 min ago

L2 order-book snapshot for a spot pair: best bid/ask, mid price, spread (absolute + %), and the top N aggregated price levels per side (default 25, max 100). Pairs use BASE-QUOTE format (BTC-USD, ETH-USD, SOL-USDC). Read from a U.S. spot exchange's public market-data API - keyless; coverage is that exchange's listed markets.

GET
https://agent402.tools/api/crypto-orderbook
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
311 ms
415 ms slowest 5%
Last check
Passed
2 min ago, next in 31 min

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

GET https://agent402.tools/api/crypto-orderbook

Each call costs $0.001 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://agent402.tools/api/crypto-orderbook?pair=BTC-USD

Parameters

ParameterTypeRequiredDescription
depthnumberNoPrice levels per side to return (1-100, default 25)
pairstringYesSpot pair as BASE-QUOTE (e.g. BTC-USD, ETH-USD, SOL-USDC)

Example response

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

Example response, 27 lines
{
  "asks": [
    {
      "orders": 3,
      "price": 62490.01,
      "size": 0.5
    }
  ],
  "bestAsk": 62490.01,
  "bestBid": 62489.29,
  "bids": [
    {
      "orders": 8,
      "price": 62489.29,
      "size": 0.81109777
    }
  ],
  "depth": 1,
  "midPrice": 62489.65,
  "pair": "BTC-USD",
  "sequence": 132601080491,
  "spread": 0.72,
  "spreadPct": 0.0012,
  "time": "2026-07-14T02:40:51Z",
  "totalAskLevels": 27473,
  "totalBidLevels": 15653
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agent402.tools/api/crypto-orderbook?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://agent402.tools/api/crypto-orderbook?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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fcrypto-orderbook
const res = await pay("https://agent402.tools/api/crypto-orderbook?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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agent402.tools/api/crypto-orderbook?pair=BTC-USD")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 min agoPassed402335 ms$0.001
5 h agoPassed402330 ms$0.001
9 h agoPassed402318 ms$0.001
14 h agoPassed402327 ms$0.001
18 h agoPassed402378 ms$0.001
Show 10 older checks
22 h agoPassed402343 ms$0.001
26 h agoPassed402259 ms$0.001
30 h agoPassed402330 ms$0.001
34 h agoPassed402332 ms$0.001
38 h agoPassed402426 ms$0.001
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46 h agoPassed402273 ms$0.001
2 days agoPassed402260 ms$0.001
2 days agoPassed402198 ms$0.001
2 days agoPassed402335 ms$0.001