01 / Smart contracts / Subscription tokens
ERC721S
A standard for ERC721 subscription tokens, enabling time-based ownership and recurring payment models for NFTs.
Vorpal Engineering / Open Source
Good foundations.
Built in the open.
Useful tools should travel. Explore the libraries and standards we contribute to the wider software community.
02 / Go / Protocol tooling
x402-go
A library for working with the x402 protocol in Go. Tools and utilities for developers building with internet-native payments.
03 / Smart contracts / Agent infrastructure
Agent Skill Registry
An onchain registry for identifying agent skills, linking them to verifiable manifests, and recording skill usage and installation attestations.
04 / Go / Agent tooling
asrpm
A command-line package manager for Agent Skill Registry. Resolve skill manifests, verify their integrity, and install and manage skills for your agents.
Better together.
Explore. Experiment. Contribute.
Found an issue or have an idea? Start a conversation in the project’s GitHub repository.