Automated USDC Yield in Your AppThe Quicknode Earn API handles the vaults, the rebalancing, and the bridging. Live on 7 chains.
Read the announcementNo account, no API key. Your agent pays per request with an x402 wallet across 80+ chains. Start with 1,000,000 free RPC requests.
x402 turns the HTTP 402 Payment Required status into a working payment flow. Your agent discovers the price, pays with a wallet, and gets the data.
Send a JSON-RPC or REST request to a Quicknode x402 endpoint with no account and no API key.
The server responds with HTTP 402 Payment Required, listing the accepted networks, stablecoins, and prices.
Your wallet signs a stablecoin payment, the request replays automatically, and the result comes back.
Settle in USDC or USDG on any supported network. The payment network is independent of the chain you query, and every network runs on both mainnet and testnet.
Mainnet and Base Sepolia testnet. Free testnet USDC via the /drip faucet.
Mainnet and devnet. Pre-fund your wallet with USDC on Solana Devnet.
The package, the guide, and the data layer. Wire x402 into your agent and start paying per request across EVM and Solana.
Mainnet and Polygon Amoy testnet. Pre-fund your wallet with USDC on Amoy.
Mainnet and X Layer testnet. Pre-fund your wallet with USDG on testnet.
See how x402 micropayments work across Quicknode RPC endpoints, from the 402 challenge to settlement, with worked examples on EVM and Solana.
x402 also fronts SQL Explorer, so your agent can run SQL over indexed blockchain data and pay per query. Schema discovery is free.
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