x402 middleware and clients for Go services.
Go’s strong standard library and concurrency model make it a solid fit for payment middleware and facilitators that must verify thousands of payments per second. These projects bring the x402 pay-per-request flow to Go HTTP servers and clients.
Below are the Go x402 and agent-payment libraries in the directory.
Real projects from the directory · stars live from GitHub · sorted by popularity.
Your AI trading terminal assistant for US stocks, commodities, forex, and crypto.
Publishes localhost services to the agentic web through self-hostable, trustless relays with x402 payments.
Building blocks for Agentic payments (x402, MPP, AP2) for TypeScript, Rust, Go, Python, Ruby, PHP, Lua, Kotlin and Swift.
Building blocks for Agentic payments (x402, MPP, AP2) for TypeScript, Rust, Go, Python, Ruby, PHP, Lua, Kotlin and Swift.
Loka AI Agentic Payment P2P Lightning Node ⚡️ is built natively on top of the established Bitcoin Lightning Network infrastructure. By pushing the boundaries of traditional payment channels, we are building a superior, high-throughput P2P Payment Value Network to power autonomous agentic and agent-to-agent economies.
go-x402-facilitator is a facilitator for X402 payment implemented in the Go language.
An x402 payments protocol for the internet. Built on gRPC-Gateway reverse-proxy server which translates a RESTful HTTP API into gRPC.
A CLI-driven security proxy that scans every HTTP request for threats using the Citadel AI engine — paid per request via the x402 protocol.
Go SDK for the x402 payment protocol — client signing, server paywall middleware, and facilitator
Caddy middleware that charges AI crawlers USDC via the x402 protocol
Reference implementation of x402-BSV — stateless settlement-gated HTTP protocol over BSV
Dedicated CLI for AI agents to earn, pay, and participate in the AI economy. Access x402 paid APIs, create invoices to receive funds, request funds from human owners, and send or receive payments in USDC — all with built-in owner approvals, spending guardrails, and FROST threshold signing on Solana.
The Identity Authority and Trust Gateway for the AI Agent economy. Issues and verifies cryptographic TrustBadges to secure cross-cloud Agent-to-Agent (A2A) communication.
x402 + MCP clients and examples for Recall Kitchen - searching recalls, etc
Agent Shaker is a coordination platform for managing AI agents and teams in complex projects. It provides a centralized system for project management, agent registration, and task coordination with real-time collaboration capabilities.
Go middleware SDK bridging the x402 HTTP payment protocol to M-Pesa STK Push. Gate any net/http resource behind a real mobile money payment.
ACE (Agent Commerce Exchange) — Open protocol for agent-native commerce: discovery, trust, and catalog for the agentic web. Payment-agnostic (x402, MPP, Stripe).
Go reference implementation of the x402 Payment Protocol for HTTP 402 machine-to-machine micropayments
Go x402 payment protocol playground — TUI for learning, exploring & practicing EIP-3009/Permit2 flows
Go client library for L402 (HTTP 402 Payment Required with Lightning Network) - pay-per-request APIs
x402 payment-gated proxy for Whitewall OS — EIP-3009 hold, on-chain verify, settle or refund
Development x402 facilitator that works with Tenderly Virtual Networks.
Cross-protocol payment router for AI agents. Handles x402 (USDC), L402 (Lightning), and Solana SPL payments transparently.
client(github.com/agent-guide/go-x402-facilitator/pkg/client)
We currently track 48 Go libraries in the directory, drawn from open-source repositories building on x402 and agent payments. The list above is sorted by GitHub stars and updates as new projects are submitted and crawled.
x402 is an open standard for paying for an HTTP resource: a server replies with HTTP 402 and payment terms, the client pays (usually USDC), and the request is fulfilled. The Go libraries above implement or build on this flow.
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