A fully modular, framework-agnostic, easy-to-extend SDK for building complex X402 payment integrations.
x402-kit is a growing Rust project in the AI payments / x402 ecosystem, focused on rust, sdk, x402. It currently has 52 GitHub stars and 2 forks, and sits alongside related tools like afara, erc8004-rust-sdk, x402-client.
the onramp for pay-as-you-go decentralized storage on IPFS — SOL, USDFC, USDC, and x402 agent payments
ERC-8004 Rust SDK for identity, reputation, and validation, with optional x402 payment flows, middleware, and optional Stripe/Coinbase adapters.
Client SDK for the Vybe x402 API. Pay-per-call USDC over HTTP and prepaid-credit WebSocket streaming for Vybe's Solana analytics API. Built for AI agents.