QR code generator API: SVG QR codes for any text or URL

$0.01 per call · failed calls are never charged · no account or API key needed

Generate a QR code for a URL or any text (UTF-8, up to 1,000 characters) as a scalable SVG plus a ready-to-embed data URL, at error correction L, M (default), Q or H. Use to put a link, Wi-Fi string or payment request on a page, label or ticket.

When to use it

Turn a link, Wi-Fi string or payment request into a QR code an agent can embed
Get a scalable SVG plus a ready-to-use data URL in one call
Pick error correction L, M, Q or H for print or screens

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

Name	Type	Description
`text` (required)	string	The text or URL to encode
`ecc`	string	Error correction: L, M (default), Q or H
`size`	integer	Pixels per module, 1-20 (default 4)
`margin`	integer	Quiet zone in modules, 0-10 (default 4)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/qr?text=https%3A%2F%2Fagent-data-tools.revmesh2074.workers.dev"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/qr?text=https%3A%2F%2Fagent-data-tools.revmesh2074.workers.dev&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "text": "https://agent-data-tools.revmesh2074.workers.dev",
  "ecc": "M",
  "version": 4,
  "modules": 33,
  "svg": "<svg version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" …</svg>",
  "dataUrl": "data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9u…"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is qr, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

Questions

Which characters work?

Any UTF-8 text up to 1,000 characters; very long text at error correction H is refused with a 400, uncharged.

What format comes back?

An SVG string and the same SVG as a base64 data URL.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 25 calls are free. Then pay with card credits (from $5) or per call in USDC over x402 or MPP. No account or API key is needed.