ToolVet
78trust / 100

Extract

by opx-status.dev in Search & web

x402 APIPassing, checked 2 h ago

Turn a public webpage into validated structured JSON. Submit a URL and requested fields. OPX retrieves the page, extracts supported values and returns machine-ready JSON. Payment settles only when required fields are successfully delivered.

POST
https://opx-status.dev/api/extract
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
263 ms
508 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://opx-status.dev/api/extract

Each call costs $0.005 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://opx-status.dev/api/extract
content-type: application/json

{
  "fields": [
    {
      "name": "name",
      "required": true,
      "type": "string"
    },
    {
      "name": "price",
      "required": false,
      "type": "number"
    }
  ],
  "url": "https://example.com/product"
}

Parameters

ParameterTypeRequiredDescription
fieldsarray of objectYes
urlstring (uri)YesPublic HTTP(S) webpage; private/internal addresses are rejected.

Example response

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

{
  "data": {
    "name": "Example product",
    "price": null
  },
  "finalUrl": "https://example.com/product",
  "missingFields": [
    "price"
  ],
  "requestId": "3c51d4e4-88b4-4b3e-9a95-1d213aa37f85",
  "sourceUrl": "https://example.com/product"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://opx-status.dev/api/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"fields":[{"name":"name","required":true,"type":"string"},{"name":"price","required":false,"type":"number"}],"url":"https://example.com/product"}'

# 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://opx-status.dev/api/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"fields":[{"name":"name","required":true,"type":"string"},{"name":"price","required":false,"type":"number"}],"url":"https://example.com/product"}' \
  | 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 $0.005 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%2Fopx-status.dev%2Fapi%2Fextract&method=POST
const res = await pay("https://opx-status.dev/api/extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "fields": [
      {
        "name": "name",
        "required": true,
        "type": "string"
      },
      {
        "name": "price",
        "required": false,
        "type": "number"
      }
    ],
    "url": "https://example.com/product"
  }),
});
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 $0.005 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://opx-status.dev/api/extract",
        json={
            "fields": [
                {
                    "name": "name",
                    "required": True,
                    "type": "string",
                },
                {
                    "name": "price",
                    "required": False,
                    "type": "number",
                },
            ],
            "url": "https://example.com/product",
        },
    )
    print(res.status_code, res.text)

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