Search Read

{
  "answer": null,
  "pages_read": 2,
  "query": "what is the x402 payment protocol",
  "results": [
    {
      "date": null,
      "page": {
        "fetched_at": "2026-10-04T12:00:00.000Z",
        "final_url": "https://x402.org/",
        "text": "x402 is an open, internet-native payment standard … (full visible text of the page, up to 12,000 characters)",
        "text_length": 3554,
        "title": "x402",
        "truncated": false
      },
      "position": 1,
      "snippet": "An open standard for internet-native payments over HTTP 402.",
      "title": "x402",
      "url": "https://www.x402.org/"
    },
    {
      "date": null,
      "page": {
        "fetched_at": "2026-10-04T12:00:01.000Z",
        "final_url": "https://docs.cdp.coinbase.com/x402/welcome",
        "text": "(full visible text of the page)",
        "text_length": 6120,
        "title": "Welcome to x402",
        "truncated": false
      },
      "position": 2,
      "snippet": "How x402 lets APIs charge per request in stablecoins.",
      "title": "x402 overview",
      "url": "https://docs.cdp.coinbase.com/x402/welcome"
    }
  ],
  "searched_at": "2026-10-04T12:00:00.000Z",
  "source": "Web search via Tavily (tavily.com); pages read by Tollkit in a real browser"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://web.tollkit.dev/search/read' \
  -H 'content-type: application/json' \
  --data-raw '{"num":2,"query":"what is the x402 payment protocol"}'

# 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://web.tollkit.dev/search/read' \
  -H 'content-type: application/json' \
  --data-raw '{"num":2,"query":"what is the x402 payment protocol"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fweb.tollkit.dev%2Fsearch%2Fread&method=POST
const res = await pay("https://web.tollkit.dev/search/read", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "num": 2,
    "query": "what is the x402 payment protocol"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://web.tollkit.dev/search/read",
        json={
            "num": 2,
            "query": "what is the x402 payment protocol",
        },
    )
    print(res.status_code, res.text)