ToolVet
78trust / 100

Extract Json

by AllTheBot Extract JSON from text in Search & web

x402 APIPassing, checked 4 h ago

Extract structured JSON from unstructured text (invoices, emails, ads, CVs...): name the fields you want, get clean JSON back. Any language, up to 6,000 characters.

GET
https://api.zkrobotics.fr/x402/extract-json
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
189 ms
243 ms slowest 5%
Last check
Passed
4 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

GET https://api.zkrobotics.fr/x402/extract-json

Each call costs $0.007 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.

GET https://api.zkrobotics.fr/x402/extract-json?fields=number%2C+date%2C+total%2C+customer&text=Invoice+%2342+dated+March+3%2C+2026%2C+total+%24120+incl.+tax%2C+customer%3A+John+Smith.

Parameters

ParameterTypeRequiredDescription
fieldsstringNo
textstringYes

Example response

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

{
  "data": {
    "customer": "John Smith",
    "date": "2026-03-03",
    "number": "42",
    "total": "$120"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.zkrobotics.fr/x402/extract-json?fields=number%2C+date%2C+total%2C+customer&text=Invoice+%2342+dated+March+3%2C+2026%2C+total+%24120+incl.+tax%2C+customer%3A+John+Smith.'

# 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://api.zkrobotics.fr/x402/extract-json?fields=number%2C+date%2C+total%2C+customer&text=Invoice+%2342+dated+March+3%2C+2026%2C+total+%24120+incl.+tax%2C+customer%3A+John+Smith.' \
  | 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 $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
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 $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.zkrobotics.fr%2Fx402%2Fextract-json
const res = await pay("https://api.zkrobotics.fr/x402/extract-json?fields=number%2C+date%2C+total%2C+customer&text=Invoice+%2342+dated+March+3%2C+2026%2C+total+%24120+incl.+tax%2C+customer%3A+John+Smith.");
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 $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.zkrobotics.fr/x402/extract-json?fields=number%2C+date%2C+total%2C+customer&text=Invoice+%2342+dated+March+3%2C+2026%2C+total+%24120+incl.+tax%2C+customer%3A+John+Smith.")
    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
4 h agoPassed402243 ms$0.007
13 h agoPassed402189 ms$0.007