utilityoperational · 13 ms

QR Code Generator

Generate a QR code for any text or URL. Returns image_base64 (base64 PNG — decode to get raw bytes). Params: text (required), size in px (64-1024, default 256), error_correction (L/M/Q/H, default M). H = highest redundancy, survives up to 30% damage.

Run free trial ↗3 free calls per day with the example input. Paid: $0.002 USDC, no limit.

Call it

import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agentsvc.io/api/v1/proxy/qr-code", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({"text":"https://agentsvc.io","size":256}),
});
const { data, payment } = await res.json();  // payment.transaction = on-chain receipt

Input

Field	Type	Description
text *	string	The text or URL to encode in the QR code
size	integer = 256	Output image size in pixels (width and height). Min: 64, Max: 1024.
error_correction	L \| M \| Q \| H = "M"	Error correction level: L=7%, M=15%, Q=25%, H=30% data recovery. Higher = bigger QR code.

Output

Field	Type	Description
image_base64	string	Base64-encoded PNG image of the QR code (decode to get raw bytes)
width	integer	Image width in pixels
height	integer	Image height in pixels
text	string	The text that was encoded
generated_at	string	ISO 8601 timestamp of generation

Example response (data)

{
  "image_base64": "iVBORw0KGgoAAAANSUhEUgAAAQAAAAEACAYAAABccqhmAAAA...",
  "width": 256,
  "height": 256,
  "text": "https://agentsvc.io",
  "generated_at": "2026-04-07T12:00:00.000Z"
}