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SiteCheck Agent Intel & Dev – High-Res QR Code Generator (SVG, Version 1)
x402
SiteCheck Agent Intel & Dev – High-Res QR Code Generator (SVG, Version 1) is a paid API for AI agents from api.fadeandco.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Generates a Version 1 QR code (21×21 modules) as a scalable SVG with optional error-correction level and pixel scale, returning both the raw SVG and a base64-encoded copy.
Price / call$0.002
Success—
StatusUnknown
How this service works
Makes a QR code as scalable SVG (21x21 modules, version 1) for up to 17 bytes at level L, 14 at M, 11 at Q or 7 at H, with the mask chosen by the standard penalty rules. Returns the SVG and a base64 copy. Larger versions are not supported; longer text returns 400.
Output
A JSON object containing the rendered SVG string (as 'svg'), its base64 equivalent ('svgBase64'), the applied error correction level ('ec'), mask pattern index ('mask'), module grid size ('size' = 21), QR version ('version' = 1), the source reference ('ISO/IEC 18004'), and a 'checkedAt' timestamp. Returns HTTP 400 if the input text exceeds the byte limit for the chosen error correction level.
Example use cases
QR code for a landing page
“Make me a QR code SVG for 'https://myshop.io/sale' with error correction level M so I can drop it straight into my website.”
High-durability QR for print labels
“Generate a QR code for the text 'LOT-2024-X7' at error correction level H and a scale of 12 — I need it to survive some wear on a printed label.”
Compact QR for email signature
“Create a small QR code SVG at scale 6 encoding 'mailto:hello@acme.com', using error correction level L, and give me the base64 version so I can embed it inline in an HTML email.”
Technical details
Endpoint
POSThttps://api.fadeandco.workers.dev/api/agent-intel/highres-qr-code-generator?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, standards-compliant QR code for short text (URLs, codes, identifiers) and want the result as a scalable SVG with an optional base64 copy — ideal for web embedding, email inlining, or print assets. Prefer it over raster-based QR generators when resolution-independence matters. Note the hard limit of Version 1 only; for longer payloads you will need a different service.
Side effects
- 400 Bad Request if text exceeds byte limit for the chosen EC level (17 bytes at L, 14 at M, 11 at Q, 7 at H)
- 400 if scale is outside the 1–20 range
- 400 or validation error if an invalid EC level string is supplied
- No support for Version 2+ QR codes — longer text always fails
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ec | string | Error correction level: L, M, Q or H (default M) |
| text | string | Text to encode as UTF-8 bytes; the byte limit depends on the level |
| scale | string | Pixels per module in the SVG, 1 to 20 (default 8) |
Output
Schema · Response
{
"type": "json",
"example": {
"ec": "M",
"svg": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 29 29\" width=\"232\" height=\"232\"><rect width=\"29\" height=\"29\" fill=\"#fff\"/><path fill=\"#000\" d=\"M4,4h1v1h-1zM5,4h1v1h-1zM6,4h1v1h-1zM7,4h1v1h-1zM8,4h1v1h-1zM9,4h1v1h-1zM10,4h1v1h-1zM12,4h1v1h-1zM13,4h1v1h-1zM14,4h1v1h-1zM16,4h1v1h-1zM18,4h1v1h-1zM1…",
"mask": 0,
"note": "Version 1 only. Checked against a published Reed-Solomon example and the format-bit rule; not scanned with a phone here.",
"size": 21,
"source": "ISO/IEC 18004 (hand-written)",
"version": 1,
"checkedAt": "2026-10-23T09:35:23.075Z",
"svgBase64": "PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyOSAyOSIgd2lkdGg9IjIzMiIgaGVpZ2h0PSIyMzIiPjxyZWN0IHdpZHRoPSIyOSIgaGVpZ2h0PSIyOSIgZmlsbD0iI2ZmZiIvPjxwYXRoIGZpbGw9IiMwMDAiIGQ9Ik00LDRoMXYxaC0xek01LDRoMXYxaC0xek02LDRoMXYxaC0xek03LDRoMXYxaC0xek04LDRoMXYxaC0xek05LDRoMXYxaC0xek0xMCw0…"
}
}Tags
x402
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