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Vorpal Engineering Open Source

Welcome to the documentation for Vorpal Engineering's open source projects. We build tools and standards for blockchain developers.

Projects

ERC721S

A subscription-based NFT standard for Ethereum that enables on-chain subscription management. ERC721S creates non-transferable tokens tied to user addresses with configurable durations and dynamic pricing.

Get started with ERC721S

x402-go

A Go implementation of the x402 protocol for verifiable on-chain payments. Includes a facilitator service, Gin middleware for protecting APIs, and client libraries for payment integration.

Get started with x402-go

Contributing

All of our projects are open source and we welcome contributions. Visit our GitHub organization to explore the repositories and submit pull requests.

Support

For questions and support:

  • Open an issue on the relevant GitHub repository
  • Follow us on X for updates