Perp Liquidity

{
  "asOf": "2026-10-11T01:05:08.124Z",
  "coin": "ETH",
  "degraded": false,
  "depthWithin0_5PctUsd": {
    "asks": 15209977,
    "bids": 18511391
  },
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "mid": 2503.85,
  "notChecked": [
    "liquidity beyond the top 20 levels",
    "other venues",
    "…1 more"
  ],
  "reasons": [
    "Slippage is measured against mid on the top 20 book levels per side (all the venue returns)."
  ],
  "slippage": [
    {
      "buyBps": 0.2,
      "sellBps": 0.2,
      "sizeUsd": 10000
    },
    {
      "buyBps": 0.54,
      "sellBps": 0.2,
      "sizeUsd": 100000
    }
  ],
  "source": "Hyperliquid l2Book",
  "sourceUrl": "https://api.hyperliquid.xyz/info",
  "spreadBps": 0.4,
  "summary": "ETH spread 0.4 bps; a $100k market order slips 0.54 bps worst side.",
  "thresholds": {
    "moderateOverBps": 5,
    "thinOverBps": 25
  },
  "verdict": "DEEP"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://derivatives.x402tookit.com/perp-liquidity?coin=ETH'

# 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://derivatives.x402tookit.com/perp-liquidity?coin=ETH' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fderivatives.x402tookit.com%2Fperp-liquidity
const res = await pay("https://derivatives.x402tookit.com/perp-liquidity?coin=ETH");
console.log(res.status, await res.text());

# 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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://derivatives.x402tookit.com/perp-liquidity?coin=ETH")
    print(res.status_code, res.text)