# qr-gen

> QR code generator API: URL, text, WiFi and vCard to crisp SVG (or JSON with data URL). Custom size, colors, margin and error correction L/M/Q/H; bulk up to 20. $0.001 per call via x402 (USDC on Base). Free demo, no account.

- Base URL: https://qr-gen.restockalarm.workers.dev
- Pay per call via x402: USDC on Base (eip155:8453) or Polygon PoS (eip155:137), payTo 0x7B97303d62517eA9E26D1E1b199Eac42a487F430
- Free demo: 3 calls/day per IP under /demo/...
- Card alternative: X-API-Key header. Credit packs (all APIs): 250 calls $1.25 https://space-command-kits-shop.fourthwall.com/products/api-credits-250-calls | 1000 calls $5 https://space-command-kits-shop.fourthwall.com/products/api-credits-1000-calls | 5000 calls $15 https://space-command-kits-shop.fourthwall.com/products/api-credits-5000-calls; claim key https://api-keys.restockalarm.workers.dev/claim
- OpenAPI: https://qr-gen.restockalarm.workers.dev/openapi.json
- Manifest: https://qr-gen.restockalarm.workers.dev/.well-known/x402.json

## Endpoints
- GET https://qr-gen.restockalarm.workers.dev/v1/qr?text={text} — $0.001 — QR code as SVG (or JSON with data URL) for text/URL/WiFi/vCard
- POST https://qr-gen.restockalarm.workers.dev/v1/bulk — $0.01 — Up to 20 QR codes in one call (JSON with SVG data URLs)

## Related
- https://web-md.restockalarm.workers.dev — URL → Markdown
- https://email-check.restockalarm.workers.dev — Email validation
- https://url-meta.restockalarm.workers.dev — Link preview / OG metadata
- https://json-tool.restockalarm.workers.dev — JSON toolbox
- Catalog: https://product-katalog.restockalarm.workers.dev/llms.txt