# UPCBay — Authentic UPC & EAN Barcodes

> UPCBay provides authentic, GS1-originated UPC and EAN barcode numbers with instant digital delivery and no annual renewal fees. Works on Amazon, eBay, Etsy, Walmart, Google Shopping, and retail stores worldwide.

## Key Information
- **Pricing**: Starting at $8 for 1 barcode, down to $0.40/barcode for bulk (5,000 codes).
- **Ownership**: 100% legal ownership with Transfer of Ownership Certificate.
- **Fees**: One-time payment, lifetime ownership, $0 renewal fees.
- **Formats**: UPC-A (12 digits), EAN-13 (13 digits), high-res EPS/SVG/PNG images, and CSV/Excel sheets.

## Agent Resources & APIs
- **OpenAPI 3.1 Spec**: [openapi.json](https://upcbay.com/openapi.json)
- **API Catalog (RFC 9727)**: [api-catalog](https://upcbay.com/.well-known/api-catalog)
- **Agent Skills Index**: [index.json](https://upcbay.com/.well-known/agent-skills/index.json)
- **MCP Server Card (SEP-1649)**: [server-card.json](https://upcbay.com/.well-known/mcp/server-card.json)
- **ARD Capability Manifest**: [ai-catalog.json](https://upcbay.com/.well-known/ai-catalog.json)
- **Auth.md Agent Registration**: [auth.md](https://upcbay.com/auth.md)
- **Commerce Protocols**: ACP ([acp.json](https://upcbay.com/.well-known/acp.json)), UCP ([ucp.json](https://upcbay.com/.well-known/ucp.json)), x402 ([x402.json](https://upcbay.com/.well-known/x402.json)), MPP ([mpp.json](https://upcbay.com/.well-known/mpp.json))

## Online Tools
- [Barcode Lookup & Validator](https://upcbay.com/tools/barcode-lookup-validator/)
- [UPC Check Digit Calculator](https://upcbay.com/tools/upc-check-digit-calculator/)
- [UPC to EAN Converter](https://upcbay.com/tools/upc-to-ean-converter/)
- [Barcode Quantity Estimator](https://upcbay.com/tools/how-many-barcodes-do-i-need/)