x402 Protocol

API Monetization Wallet as identity. USDC on-chain. Agent-ready.

Turn any API into a paid service — no registration, no API keys. AI Agents pay and consume autonomously.

Try Demo x402 sdk
Features
Built for the Agent Economy
Wallet-native identity, on-chain settlement, and autonomous API consumption.
Wallet Authentication
Authentication

Wallet Authentication

EVM and Solana wallet signatures replace account registration. Agents onboard with just a wallet.

USDC On-Chain Payment
Payment

USDC On-Chain Payment

USDC settlement on Base and Solana. Transparent, on-chain, verifiable.

Credit System
Credits

Credit System

One balance across all services. Purchase once, consume anywhere.

Multi-Provider
Integration

Multi-Provider

Plug in RPC, AI, and data providers with unified billing.

Multi-Chain RPC
Blockchain

Multi-Chain RPC

30+ networks — ETH, Solana, Bitcoin, Base, Arbitrum, and more.

Real-time Monitoring
Observability

Real-time Monitoring

Track every call and credit in real time.

How It Works
Three Steps
Wallet to API call in under a minute.
Connect Wallet
1

Connect Wallet

MetaMask or Phantom, one signature

Purchase Credits
2

Purchase Credits

USDC on-chain, instant settlement

Call APIs
3

Call APIs

Credits unlock every API on the platform

Start Building
Connect a wallet, buy credits, call APIs. That's it.
Try Demo