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Chains & Settlement Networks

Where agent payments actually settle — and the tooling per network.

An agent payment is only finished when it settles on-chain. The ecosystem has converged on a few networks: Base (Coinbase’s L2, the home network of x402), Solana (sub-second finality for high-frequency micropayments), and the broader EVM family — with USDC as the de-facto unit of account across all of them.

These categories group the directory by settlement network, so you can shortlist tooling that works where your users already hold funds. Most x402 projects are chain-agnostic, but facilitators, wallets and examples usually target one network first.

Chains categories

Solana 148

Open-source tooling that settles agent payments in USDC on Solana.

Base 157

x402 tooling for Base — the home network of the protocol.

Ethereum 105

Accept agent payments in USDC across Ethereum and EVM chains.

USDC 221

The stablecoin that settles almost every agent payment.

Top chains projects

The most-starred projects across all chains categories.

The agent-native LLM router for OpenClaw. 41+ models, <1ms routing, USDC payments on Base & Solana via x402.

⭐ 6.7kTypeScript

The AI agent with a wallet — spends USDC autonomously to get real work done. Apache-2.0, TypeScript.

⭐ 624TypeScript

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.

⭐ 573Python

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.

⭐ 526Rust

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.

⭐ 487TypeScript

DePIN for Vintage Hardware — Proof-of-Antiquity blockchain where old machines outmine new ones. AI-powered hardware fingerprinting, 15+ CPU architectures, Solana bridge (wRTC). $0 VC.

⭐ 467Python

x402 Ecosystem Explorer

⭐ 357TypeScript

Drop-in OpenAI Python client with transparent x402 payment support.

⭐ 260Python

🚀 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.

⭐ 260

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.

⭐ 169TypeScript

Autonomous AI BD Agent for SolCex Exchange: 24/7 Cross-Chain Token Scoring & Payments 2026

⭐ 151HTML

Drop-in OpenAI Typescript client with transparent x402 payment support.

⭐ 151TypeScript