ToolVet
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Orderbook

by Crypto Order Book (L2 Depth) in Onchain & crypto

x402 APIPassing, checked 3 h ago

Live L2 order book for a crypto perp market: aggregated bids and asks with price, size and resting-order count per level, plus the best bid/ask spread, spread % and mid price. Real-time market-depth snapshot for a coin (BTC, ETH, SOL, and more); pass `depth` for how many price levels per side. Data source: Hyperliquid (dYdX fallback).

POST
https://crypto.openverbs.com/v1/orderbook
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
571 ms
658 ms slowest 5%
Last check
Passed
3 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://crypto.openverbs.com/v1/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.

POST https://crypto.openverbs.com/v1/orderbook
content-type: application/json

{
  "coin": "example",
  "depth": 1
}

Parameters

ParameterTypeRequiredDescription
coinstringYesCoin symbol, e.g. "BTC", "ETH", "SOL".
depthintegerNoHow many price levels per side (default 20; Hyperliquid serves up to 20, dYdX up to 100).

Example response

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

Example response, 28 lines
{
  "asks": [
    {
      "n": 12,
      "px": 85038,
      "sz": 1.25549
    }
  ],
  "attribution": "Data source: Hyperliquid (https://hyperliquid.xyz)",
  "bids": [
    {
      "n": 39,
      "px": 85037,
      "sz": 6.86347
    }
  ],
  "coin": "BTC",
  "count": {
    "asks": 20,
    "bids": 20
  },
  "midPrice": 85037.5,
  "source": "hyperliquid",
  "spread": 1,
  "spreadPct": 0.001176,
  "stale": false,
  "time": 1789808400000
}

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 -X POST 'https://crypto.openverbs.com/v1/orderbook' \
  -H 'content-type: application/json' \
  --data-raw '{"coin":"example","depth":1}'

# 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://crypto.openverbs.com/v1/orderbook' \
  -H 'content-type: application/json' \
  --data-raw '{"coin":"example","depth":1}' \
  | 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%2Fcrypto.openverbs.com%2Fv1%2Forderbook&method=POST
const res = await pay("https://crypto.openverbs.com/v1/orderbook", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "coin": "example",
    "depth": 1
  }),
});
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.post(
        "https://crypto.openverbs.com/v1/orderbook",
        json={
            "coin": "example",
            "depth": 1,
        },
    )
    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
3 h agoPassed402620 ms$0.002
7 h agoPassed402557 ms$0.002
12 h agoPassed402590 ms$0.002
16 h agoPassed402498 ms$0.002
20 h agoPassed402627 ms$0.002
Show 10 older checks
25 h agoPassed402626 ms$0.002
29 h agoPassed402623 ms$0.002
33 h agoPassed402550 ms$0.002
37 h agoPassed402587 ms$0.002
42 h agoPassed402652 ms$0.002
46 h agoPassed402615 ms$0.002
2 days agoPassed402565 ms$0.002
2 days agoPassed402566 ms$0.002
2 days agoPassed402555 ms$0.002
3 days agoPassed402527 ms$0.002