**Agent Commerce Kit (ACK)** provides vendor-neutral protocols, patterns, and open source components that enable AI agents to participate in commerce.
Package for creating, signing, verifying, and managing W3C Verifiable Credentials.
> Verifiable Identity for Agent Interactions
JWT utilities for creating and verifying JWTs with support for multiple key algorithms.
DID (Decentralized Identifier) and DID document utilities with support for multiple DID methods.
> Agent-Native Payments Protocol for the Agent Economy
Methods for dealing with cryptographic keys on multiple curves (secp256k1, Ed25519).
CAIP (Chain Agnostic Improvement Proposal) utilities with support for CAIP-2, CAIP-10, and CAIP-19.