Everything you need to integrate FareSide payments into your application.
x402 infrastructure: open-source tools and managed services for AI agent payments
Accept your first x402 payment in 5 minutes
Chains and tokens supported by FareSide
Get your FareSide API key and configure your integration
TypeScript integration examples for popular frameworks
Rust integration with Axum framework using x402-axum
Learn how to build x402 clients that can pay for services
How EIP-3009 and Permit2 transfers work in x402 on EVM chains
Usage-based payments with maximum amount authorization
Run your own x402 facilitator with x402-rs
Create a custom x402 facilitator using Rust
Implement custom payment logic for x402-rs
Get in touch with the FareSide team