USEFUL APIS FOR AI AGENTS

QR

Scannable QR codes in your colors.

Generate SVG or PNG QR codes for links, text and standard payloads. Includes a four-module quiet zone, selectable error correction and validated foreground/background contrast.

0.02 USDCBase mainnetx402 v2

Make this part of your workflow.

One fixed example is free. Custom work uses a clear input contract and releases the result after payment settles.

Make a custom request · 0.02 USDC ↗Fixed free example ↗Interactive API reference ↗OpenAPI contract ↗Agent instructions ↗

One copyable request.

POST /v1/qr/render

{
  "text": "https://acutisignatius.com/agentic",
  "format": "png",
  "size": 512
}

Send the JSON to the operation above. An x402-capable client receives the payment challenge, authorizes exactly 0.02 USDC, and retries with PAYMENT-SIGNATURE.

Keep the result.

SVG / PNG + SHA-256

Files arrive in a JSON artifact envelope with base64 bytes, filename, MIME type, size and SHA-256. Decode the bytes to save the file. Diagnostic results arrive as structured JSON.

The same proof and normalized input retrieves the exact paid result for 30 minutes across restarts. A proof cannot unlock another request. Never create another authorization automatically after ambiguous delivery.