Api Endpoint

Bulk QR Code Generator

Send a list of texts — website addresses, phone numbers, plain words, WiFi details, anything — and get back a ready-to-use QR code image for each one. Every QR code comes as a base64-encoded PNG you can drop straight into a webpage or save to disk. Great for marketing campaigns, event tickets, product labels, menus, or any situation where you need many QR codes in one go. Empty entries are quietly skipped. Each input is limited to 700 characters. You must send at least one non-empty entry.

Open interactive test console

Offering

Provider: qr-code-generator.underscoredone.com
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Creative
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://qr-code-generator.underscoredone.com/generate
MIME type: application/json
First seen: 2026-10-16T01:50:10.647Z
Last seen: 2026-11-02T02:53:31.725Z
Tags: qr code, qr code generator, qr, generate qr, text to qr code

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b"
  }
]

Observed health

Status: Reachable
Latest latency: 82 ms
Average latency: 99 ms
HTTP status: 405
Last checked: 2026-11-02T01:00:32.329Z
Reachability: 100% over 3 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "properties": {
        "texts": {
          "type": "array",
          "description": "The list of things you want turned into QR codes — website addresses, phone numbers, plain text, WiFi credentials, anything you like. Each entry must be 700 characters or fewer. Empty entries are skipped. At least one real entry is required."
        },
        "size": {
          "type": "integer",
          "description": "How wide (and tall — QR codes are square) the output image should be, measured in pixels. Must be between 100 and 1200. Defaults to 600 if you leave it out."
        },
        "error_correction": {
          "type": "string",
          "description": "How much damage or dirt the QR code can survive and still scan correctly. Choose L (least tough, smallest code), M, Q, or H (most tough, slightly larger code). Defaults to H, which is best for printed labels or stickers."
        }
      },
      "required": [
        "texts"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "count": 2,
    "results": [
      {
        "text": "https://example.com",
        "qr_base64": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAlgAAAJYCAYAAAC+ZpjcAA..."
      },
      {
        "text": "Phone: +1-800-555-0199",
        "qr_base64": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAlgAAAJYCAYAAAC+ZpjcAA..."
      }
    ],
    "api_version": "1.0.0"
  }
}