ToolVet
77trust / 100

Decode

by Decode QR / barcode in Developer tools

x402 APIPassing, checked 4 h ago

Read the text out of a QR code or barcode in a PNG or JPEG image. Auto-detects QR, DataMatrix, PDF417, Aztec and 1D symbologies (Code128/39/93, EAN-13/8, UPC-A/E, ITF, Codabar). A valid image with no code returns { found: false }; a payload that is not a parseable image is a 400.

POST
https://qr.openverbs.com/v1/decode
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
570 ms
623 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

POST https://qr.openverbs.com/v1/decode

Each call costs $0.004 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://qr.openverbs.com/v1/decode
content-type: application/json

{
  "image": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII="
}

Parameters

ParameterTypeRequiredDescription
imagestringYesThe image containing the code — a PNG or JPEG, as a base64 string or a data: URL.

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://qr.openverbs.com/v1/decode' \
  -H 'content-type: application/json' \
  --data-raw '{"image":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII="}'

# 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://qr.openverbs.com/v1/decode' \
  -H 'content-type: application/json' \
  --data-raw '{"image":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII="}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fqr.openverbs.com%2Fv1%2Fdecode&method=POST
const res = await pay("https://qr.openverbs.com/v1/decode", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "image": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII="
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://qr.openverbs.com/v1/decode",
        json={
            "image": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII=",
        },
    )
    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 agoPassed402602 ms$0.004
8 h agoPassed402657 ms$0.004
13 h agoPassed402590 ms$0.004
18 h agoPassed402595 ms$0.004
22 h agoPassed402583 ms$0.004
Show 10 older checks
27 h agoPassed402556 ms$0.004
31 h agoPassed402561 ms$0.004
35 h agoPassed402589 ms$0.004
39 h agoPassed402573 ms$0.004
44 h agoPassed402558 ms$0.004
2 days agoPassed402580 ms$0.004
2 days agoPassed402571 ms$0.004
2 days agoPassed402623 ms$0.004
3 days agoPassed402557 ms$0.004
3 days agoPassed402554 ms$0.004