# Services from qr-api-production-1836.up.railway.app on Zero

> qr-api-production-1836.up.railway.app serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/qr-api-production-1836.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/qr-api-production-1836.up.railway.app/health.json

## Services

- [Styled QR Code Generator](https://www.zero.xyz/c/styled-qr-code-generator-9990e84b/llms.txt): $0.001/call via x402. Generates a customized QR code PNG (base64-encoded in JSON) with configurable foreground/background colors, module size, border width, and error-correction level.
- [QR/Barcode Decoder API](https://www.zero.xyz/c/qr-barcode-decoder-api-110473bd/llms.txt): $0.001/call via x402. Decodes one or more QR codes or barcodes from a base64-encoded image, returning each code's type, decoded text, bounding rectangle, and polygon coordinates.
- [QR Code Batch Generator](https://www.zero.xyz/c/qr-code-batch-generator-93b3d0c6/llms.txt): $0.001/call via x402. Generates up to 20 QR codes in a single API call, returning per-item records with QR metadata and base64-encoded PNG images.
- [QR Code Basic Generator](https://www.zero.xyz/c/qr-code-basic-generator-f39b30c6/llms.txt): $0.001/call via x402. Generates a black-on-white QR code PNG (returned as base64-encoded JSON) from any text or URL input.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)