Surplus lines market data, per query.

$ curl -s "https://api.querylines.com/v1/premium/sample"

Paid endpoints (/v1/premium, /v1/compare, …) return an x402 payment challenge instead of data until it's settled. Full walkthrough →

// pay-per-query, no account: settle the 402 and retry
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.EVM_PRIVATE_KEY);
const client = new x402Client();
client.register("eip155:*", new ExactEvmScheme(signer));

const fetchWithPayment = wrapFetchWithPayment(fetch, client);

const res = await fetchWithPayment(
  "https://api.querylines.com/v1/premium?state=FL"
);
console.log(await res.json());

Full walkthrough →

# pip install "x402[httpx,evm]"
from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

client = x402Client()
register_exact_evm_client(client, EthAccountSigner(Account.from_key(PRIVATE_KEY)))

async with x402HttpxClient(client) as http:  # inside your async main()
    response = await http.get("https://api.querylines.com/v1/premium?state=FL")
    await response.aread()
    print(response.text)

Full walkthrough →

$ claude mcp add --transport http querylines https://api.querylines.com/mcp

{
  "mcpServers": {
    "querylines": { "type": "http", "url": "https://api.querylines.com/mcp" }
  }
}

The 3 free tools work in any MCP client with zero setup. Paid tools need an x402-capable client with a funded wallet, plain clients get a payment challenge. Full walkthrough →