APIs › Image, SVG, QR & Barcode › QR Code Generator

QR Code Generator

Generates a QR code with configurable error correction, size, quiet zone, colours and output format, returning the version chosen.

POST /v1/qr/create $0.005 per call

Specification

Endpoint

POST /v1/qr/create

Price

$0.005 per call · tier basic_data

Payment

x402 on X Layer (chain 196) · settled in USDG or USDT0 · schemes exact, aggr_deferred

Data source

Local sandboxed processing of the uploaded image

Timeout

60 seconds

Max request

20 MB

Version

1.0.0

Calling it

The first call returns a 402 with the payment challenge. Retry with a signed authorisation in the X-PAYMENT header — see the payment guide for the exact shape.

curl -i -X POST "https://api.dana-edu.pp.ua/v1/qr/create" \
  -H "content-type: application/json" \
  -d '{ ... }'

Response

Real output, captured by running this endpoint at build time — not written by hand. Volatile fields such as timestamps are elided. Captured 2026-07-30.

{
  "content_length": 22,
  "version": 2,
  "modules_per_side": 25,
  "error_correction": "M",
  "recovery_capacity_percent": 15,
  "box_size": 10,
  "border_modules": 4,
  "dimensions": {
    "width": 330,
    "height": 330
  },
  "output_format": "PNG",
  "output_size_bytes": 1213,
  "colour_contrast_ratio": 21,
  "output_base64": "<base64 payload elided from the published example>"
}

Every response is wrapped in the same envelope: data plus warnings, sources, confidence, informational_only and a measured processing_ms. See the envelope reference.

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