The largest language slice of the x402 ecosystem.
TypeScript and Node.js make up the biggest part of the x402 ecosystem — middleware for Express, Hono and Next.js, client SDKs, and agent frameworks. If you ship a JavaScript backend, there is almost certainly a drop-in x402 paywall for it, often installable in under ten lines of code.
These are the TypeScript / JavaScript projects in the directory, sorted by stars.
Real projects from the directory · stars live from GitHub · sorted by popularity. Showing the top 60 of 852.
The agent-native LLM router for OpenClaw. 41+ models, <1ms routing, USDC payments on Base & Solana via x402.
A local-first AI agent with persistent memory, emotional intelligence, and a peer-to-peer skills economy.
Self-healing infrastructure for AI agent payments. 90.3% auto-recovery.
The AI agent with a wallet — spends USDC autonomously to get real work done. Apache-2.0, TypeScript.
The trust layer for agent-to-agent commerce — natural-language mandates, ERC-7710 delegated permissions, x402 payments, escrow, and dispute resolution as one open, catch-all Agent Skill / Claude Code plugin.
The world's first privacy layer for AI agents on Solana — stealth addresses + x402 payments. Every payment lands at a fresh, unlinkable address.
Open Source AI trading agent that operates autonomously across 1000+ markets - Polymarket, Kalshi, Binance, Hyperliquid, Solana DEXs, 5 EVM chains. Scans for edge, executes instantly, manages risk while you sleep. Agent commerce protocol for machine-to-machine payments. Self-hosted. Built on Claude.
Live data for AI agents — search, research, markets, crypto, X/Twitter. Pay-per-call via x402 micropayments.
Open-source MCP servers for Latin American commerce — Pix, NF-e, banking, fiscal, logistics, and messaging across Brazil, Mexico, Argentina, Colombia, Chile, and Peru. MIT, on npm.
Lucid Agents Commerce SDK. Bootstrap AI agents in 60 seconds that can pay, sell, and participate in agentic commerce supply chains. Our protocol agnostic SDK provides CLI-generated templates and drop-in adapters for Hono, Express, Next.js, and TanStack, giving you instant access to crypto/fiat payment rails (AP2, A2A, x402, ERC8004).
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.
Drop-in OpenAI Typescript client with transparent x402 payment support.
A complete TypeScript implementation of the Python x402 payment protocol extension for A2A (Agent-to-Agent) communication. Enable your AI agents to request, verify, and settle crypto payments seamlessly.
Client SDK, Claude plugin and skill framework for the Pinion protocol. x402 micropayments on Base.
An x402 / agent-payment project in the TypeScript category.
Dedicated agent skills for building, upgrading, and maintaining Shopify Hydrogen storefronts — works with Claude, Cursor, Copilot, and more.
Next.js-like framework building AI Agents that are payment-native. Bootstrap your agent with A2A, MCP, x402 payments, and ERC-8004 identity.
Open-source 3D AI agent framework — GLB/glTF avatars with LLM brains, memory, emotions, and autonomous payments. MCP server · x402 · Solana/EVM · Three.js. Embed anywhere as a web component. Character studio, animation gallery, OAuth 2.1. Browser-native.
An x402 / agent-payment project in the TypeScript category.
Give any AI agent a crypto wallet. Agents deserve access to money. Pay x402 APIs, receive USDC, check balances — autonomously. Works with Claude, LangChain, AutoGen, CrewAI, and any MCP client. EVM + Solana.
A high-performance, crypto-monetized AI microservice architecture implementing the x402 Protocol
The way AI coordinates and transacts. Routing and settlement layer for your agent economy.
A universal framework designed to allow agents and other utilities to transparently make machine payments using web infrastructure.
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.
Join.cloud lets AI agents work together in real-time rooms. Agents join a room, exchange messages, commit files to shared storage, and optionally review each other's work — all through standard protocols (MCP and A2A).
A decentralized micro-settlement protocol enabling autonomous AI agents to pay publishers for premium content via Circle Programmable Wallets and x402 nanopayments.
npx CLI that scaffolds blockchain-registered AI agents with on-chain identity (ERC-8004), A2A communication, MCP tool serving, and optional USDC micropayments across EVM and Solana.
Opinionated React Native crypto x AI chat app boilerplate with embedded wallet support, conversational AI, and dynamic UI component injection
Bidirectional bridge between Claude Code and OpenAI Codex CLI. Built on Claude Code Channels. Two AI agents, one conversation, real-time web UI.
The first AA-native x402 payment stack on NERO Chain — facilitator, SDK, audited settlement contract, and a public playground showing AI agents paying APIs in USDC with paymaster-sponsored gas.
The best way to monetize AI applications & MCP, using x402, CDP Smart Wallets & Paymaster
HTTP 402 is the web-native standard for payments. A frictionless machine-to-machine protocol that allows agents to pay for APIs, compute resources, and data.
AI-powered flood intelligence system featuring h2oGPTe Agent + NVIDIA NIM integration (A2A), NAT pipeline with Nemotron 49B, and real-time flood risk assessment. Part of NVIDIA–H2O.ai AI for Good Blueprint for disaster response and monitoring.
The payment rail AI agents use to get paid without human approval. Optimistic settlement on @solana. Jobs auto-finalize after a challenge period, disputed jobs escalate to a bonded arbitrator. One protocol, any agent.
Sluice is a toll booth for the AI-read web. Creators price the smallest unit of what they make, AI agents pay it automatically in USDC, and Circle Gateway batches the tiny payments and settles them on Arc, gas-free and verifiable.
Plugins & tools to build self-sustaining & autonomous AI Agents on Aleph Cloud and LibertAI
On-chain economy stack for autonomous AI agents — ERC-8004 identity, ERC-8128 signing, X402 payments, XMTP messaging
xgrain402 delivers production-ready payment processing capabilities built specifically for the BSC ecosystem
xgrain402-scan provides comprehensive insights into our growing BSC ecosystem
Tooling for building applications with x402 payment capabilities. Supports buyer and seller roles.
Drop-in adapters connecting 50+ agent frameworks (LangChain, CrewAI, AutoGen, OpenAI Agents, MCP, A2A, x402) to the Agoragentic marketplace: route a task with execute(), get a receipt, settle in USDC on Base. Monorepo + npm packages for MCP, Micro ECF, and local readiness tooling.
An open standard for push-based, verifiable communication between digital entities and agents that follow them.
[Hackathon winner]A production-ready micropayment gateway that implements HTTP 402 (Payment Required) to monetize access to historical Solana blockchain data via Old Faithful. Users pay micro-amounts in USDC to query historical transactions and blocks.
MCP server for Run402 — AI-native Postgres + REST + auth + storage + static sites. Pay with x402 USDC on Base. No signups.
Accept payments from AI agents. Open-source. Your data, your domain, your rules. Free forever.
We currently track 852 TypeScript projects 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 TypeScript projects above implement or build on this flow.
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