# Services from barcode-qr.x402tookit.com on Zero

> barcode-qr.x402tookit.com serves 7 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/barcode-qr.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/barcode-qr.x402tookit.com/health.json

## Services

- [vCard QR Code Generator](https://www.zero.xyz/c/vcard-qr-code-generator-ada32f74/llms.txt): $0.03/call via x402. Generates a vCard 3.0 contact card payload and its QR code SVG from contact details like name, email, phone, and address.
- [EAN-13 / UPC-A Barcode SVG Generator](https://www.zero.xyz/c/ean-13-upc-a-barcode-svg-generator-9e4da234/llms.txt): $0.02/call via x402. Generates an SVG barcode image for EAN-13 or UPC-A barcodes, automatically computing or verifying the check digit and applying standard L/G/R module encodings.
- [QR Code SVG Generator](https://www.zero.xyz/c/qr-code-svg-generator-f5e33e1b/llms.txt): $0.03/call via x402. Encodes any text or URL as a standards-compliant QR code SVG, with full control over error correction, colors, scale, and mask pattern
- [Code 128 Barcode SVG Generator](https://www.zero.xyz/c/code-128-barcode-svg-generator-bc8195b9/llms.txt): $0.02/call via x402. Encodes ASCII text as a Code 128 barcode SVG with automatic subset A/B/C switching and mod-103 checksum computation.
- [WiFi QR Code Payload Generator](https://www.zero.xyz/c/wifi-qr-code-payload-generator-6e62820a/llms.txt): $0.03/call via x402. Builds a standard WIFI: join string with proper ZXing/Android escaping and returns it as a QR code SVG image.
- [GS1 Barcode Check Digit Calculator and Verifier](https://www.zero.xyz/c/gs1-barcode-check-digit-calculator-and-verifier-82705fce/llms.txt): $0.02/call via x402. Computes or verifies the GS1 mod-10 check digit for EAN-8, UPC-A, EAN-13, ITF-14 (GTIN-14), and SSCC barcode numbers.
- [QR Code Capacity Lookup (ISO 18004)](https://www.zero.xyz/c/qr-code-capacity-lookup-iso-18004-7468cdb0/llms.txt): $0.02/call via x402. Returns QR code capacity limits from the ISO 18004 table — max digits, alphanumeric, and bytes for a given version, or finds the smallest version that fits a given data length.

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)