The stablecoin that settles almost every agent payment.
USDC is the de-facto unit of account for agent payments: a dollar-pegged stablecoin available natively on Base, Solana, Ethereum and more. Pricing in dollars instead of a volatile token keeps per-request metering sane, and Circle’s issuance makes USDC the default settlement asset for x402 facilitators.
Below are the USDC-focused projects tracked in the directory — accept, send and convert USDC in x402 flows.
Real projects from the directory · stars live from GitHub · sorted by popularity. Showing the top 60 of 221.
The agent-native LLM router for OpenClaw. 41+ models, <1ms routing, USDC payments on Base & Solana via x402.
The AI agent with a wallet — spends USDC autonomously to get real work done. Apache-2.0, TypeScript.
The first agentic payment network: policy-controlled, gasless, and real money-ready. OmniClaw CLI + Financial Policy Engine let autonomous agents pay and earn safely at machine speed.
An open SDK for agentic payments. Let AI agents make payments, hold funds, and move money across chains with policy enforcement and human approval built in.
🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.
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.
Autonomous AI BD Agent for SolCex Exchange: 24/7 Cross-Chain Token Scoring & Payments 2026
Client SDK, Claude plugin and skill framework for the Pinion protocol. x402 micropayments on Base.
A decentralized micro-settlement protocol enabling autonomous AI agents to pay publishers for premium content via Circle Programmable Wallets and x402 nanopayments.
The brutally honest map of where AI-agent money actually flows. 51 rounds, 137 angles, 230+ platforms. 3 self-hosted x402 v2 endpoints + 3 tools in the official MCP Registry. 385K star distribution.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
Autonomous AI Agent Swarm framework with x402 self-executing wallets. Empowers LLM-driven agents to trade, bridge, and manage crypto treasuries without human intervention. The ultimate Agentic DeFi toolkit for 2026.
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.
The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.
MCP server and plugin for Sperax Protocol – USDs, SPA, veSPA & Demeter on Arbitrum and BNB Chain. Listed on Anthropic's official MCP Registry.
A chain-agnostic AI-native payment infrastructure, authz layer for x402
Virtual MasterCards for AI agents - pay with USDC via x402 on Stellar
Remlo — Borderless payroll and agent-payment infrastructure. Tempo MPP + Solana/Base x402, Bridge fiat rails, ERC-8004/SAS reputation.
Programmable Wallets for Salesforce, powered by Circle Programmable Wallets, is an open source solution built on Circle Programmable Wallet technology to operating 100% within the Salesforce ecosystem.
Production-ready Rust server template for building HTTP APIs with x402 payment integration on Solana. Accept USDC payments for API access. Includes Axum, Actix and Rocket templates.
x402 payment protocol enabling AI agents to autonomously pay for APIs on Arbitrum. Features Sperax USDs stablecoin with auto-yield, payment channels for streaming micropayments, on-chain subscriptions, and a tool registry marketplace. Includes TypeScript SDK, Express middleware, and upgradeable smart contracts.
🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs. Contributions welcome!
Off-chain credit ledger + hire marketplace for AI agents. Ed25519-signed envelopes, atomic settlement, hire-and-release escrow. https://voidly.ai/pay
Open-source wallet infrastructure for AI agents. Earn, spend, and trade USDC on Solana with human oversight and FROST threshold signing.
Official TypeScript/Node.js SDKs for the InFlow payments platform - x402 and MPP (Machine Payments Protocol) integration for sellers and buyers.
A wallet for your agents to onboard and pay. Agentic MPP / x402 payments from your machine - CLI + MCP server.
Solana-native AI agent payment infrastructure. AI agents pay for LLM API calls with USDC-SPL on Solana via the x402 protocol.
Agent-first Remote MCP for X (Twitter) batch crawling with x402 USDC top-up (Base/Solana). Includes OpenAPI + copy-paste ADK/curl E2E examples.
MCP server for Bloomfilter, a domain registration service for AI Agents.
Zero latency! Zero code change! Empower your AI agent with payment ability via x402 protocol! (Openclaw, Claude code, Cursor, Langchain, CrewAI, AutoGen...)
Universal MCP gateway for AI agents — 1108 tools, 307 providers. One endpoint (https://apibase.pro/mcp), pay-per-call with x402 USDC on Base + MPP USDC on Tempo.
Proxies.sx marketplace where your agents can earn money by building services with our infrastructure
the onramp for pay-as-you-go decentralized storage on IPFS — SOL, USDFC, USDC, and x402 agent payments
DNA — Payment rails for AI agents. x402 micropayment protocol on Solana. Netting, transfer, stream settlement. Receipt anchoring on-chain.
ARCHIVED (read-only). Canonical source moved to github.com/mapleleaflatte03/meridian
An open-source, serverless and agentic design for pay-per-use AI content generation using USDC stablecoin payments via x402, featuring browser wallet and autonomous agent flows on AWS.
x402 (HTTP 402 Payment Required) SDK + MCP server: let any API charge for itself and any AI agent pay for itself, USDC & stablecoins across EVM, Solana & 8 more chain families, in a couple of lines. Backendless, no fee, self-custodial, paid straight to your wallet. TypeScript, MIT.
The open authority layer + SDKs for AI-agent payments. Thin Python/TS clients, an MCP server, framework adapters (LangChain/CrewAI/Hermes/OpenClaw/…), and @sardis/reference — a pure policy simulator + AP2/TAP/x402 verifiers showing exactly how Sardis decides if an agent may spend. The hosted engine that moves money is private.
63 deterministic quant computation tools for autonomous financial agents. Options, derivatives, risk, portfolio, statistics, crypto/DeFi, macro/FX, TVM. 1,000 free calls/day — no signup.
Korean resources and tutorials for x402 payment protocol on Base chain
APIMesh — 23 pay-per-call web analysis APIs + 16-tool MCP server with autonomous API generation. Security audits, SEO, tech stack detection. x402 + Stripe MPP payments.
The x402 Service Encyclopedia — Every service ranked, reviewed, and documented. Community knowledge base for the AI agent economy.
APIMesh — 23 pay-per-call web analysis APIs + 16-tool MCP server with autonomous API generation. Security audits, SEO, tech stack detection. x402 + Stripe MPP payments.
Connect OpenClaw agents across teams and enterprises to share, discover, and collaborate on custom automation tools securely and efficiently.
⚡ The gold standard for x402 resources. 300+ projects, SDKs, tools, facilitators, and ecosystem data for the HTTP 402 Payment Required protocol. Curated by 24K Labs.
Spending controls for AI agents paying online. Policy-gated x402 payments with audit log.
Payment infrastructure for AI agents. Reference implementation: x402 + MPP + fiat.
Build paid APIs, agents, tools & data feeds on the DNA x402 hosted rail. Templates, Degen Mode, no backend custody. Public Beta.
Monetize your site for the AI era. AI bots pay $0.001 USDC per page via Arc Nanopayments.
One-command local development environment for HTTP 402 Payment Required protocol with blockchain payments (EIP-3009 USDC)
Local x402 payment facilitator for development and testing. Fork Base mainnet with Anvil, verify and settle x402 payments locally.
The commerce layer for the x402 agent economy — micropayments for AI agents on Base and Solana
We currently track 221 USDC 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 USDC projects above implement or build on this flow.
Submit it from the Submit page. We crawl the repository, classify it, and it appears in the relevant category pages — including this one if it matches.