Question 1

What is x402 Infrastructure?

Accepted Answer

x402 Infrastructure is a multi-chain USDC payment verification API that allows developers to verify crypto payments across 12+ blockchains with a single API call. It eliminates the need to manage RPC nodes, parse transactions, or handle chain-specific logic.

Question 2

Which blockchains does x402 support?

Accepted Answer

x402 supports Solana, Base, Ethereum, Polygon, Arbitrum, Optimism, Avalanche, BNB Chain, Celo, Gnosis, Moonbeam, and Aurora. More chains are added regularly based on demand.

Question 3

How fast are payment verifications?

Accepted Answer

x402 provides sub-500ms response times with a 99.9% uptime SLA. Most verifications complete in under 300ms.

Question 4

Do I need to manage RPC nodes?

Accepted Answer

No. x402 handles all blockchain infrastructure, RPC endpoints, and transaction parsing. You only need to make a single API call with the transaction hash.

Question 5

What is the pricing model?

Accepted Answer

x402 offers four tiers: Free (1,000 verifications/month, $0), Starter (50,000 verifications/month, $99), Pro (500,000 verifications/month, $299), and Enterprise (unlimited, $999).

x402 Infrastructure Pricing

Multi-Chain Payment Verification

Free

Starter

Pro

Enterprise