Discover x402 Payment-Enabled API Endpoints for AI Agents
Agent Index is the leading directory for x402 protocol endpoints — the new standard for agent-to-agent commerce. Search thousands of payment-enabled APIs that AI agents can use autonomously with USDC on Base.
Find endpoints for crypto price data, DeFi analytics, AI model inference, blockchain oracles, and more. Every endpoint is quality-scored, health-monitored, and ready for instant micropayments.
Build Your Own x402 Endpoint: Ready to monetize your API? Deploy on Railway (get $20 free credit) or DigitalOcean ($200 credit), then submit your endpoint to get discovered.