COINBASE ONRAMP
NON-CUSTODIAL SETTLEMENT
BASE NETWORK · CHAIN 8453
Fund Your Agent Wallet with USDC
Provision USDC on Base to power autonomous per-call payments and machine contracts. Powered by Coinbase Developer Platform (CDP): funds deliver directly from Coinbase to your self-custodied wallet. code402 never touches, intermediates, or pools your assets.
⚡ Automated 3-Step Coinbase Funding
Preset: 20 USDC on Base
1
Connect Destination Wallet
Select your self-custodied wallet (Coinbase Wallet, MetaMask, Rabby, or WalletConnect).
This is the destination address that will receive the purchased USDC on Base.
2
Cryptographic Ownership Proof (Gasless EIP-191)
Sign an ephemeral challenge to prove control over the destination address.
Zero gas, zero on-chain transaction. Our edge verifier validates your signature and calls Coinbase's server-side session API.
3
Launch Coinbase Hosted Checkout
Complete your checkout on Coinbase's secure hosted flow using Debit Card, Apple Pay, or Coinbase Balance.
USDC is delivered immediately to your connected wallet on Base.
Non-Custodial Architecture
Direct peer-to-peer delivery. Fiat settles through licensed Coinbase entities; USDC delivers directly to your unhosted wallet.
Base L2 Native (Gasless)
Settlement runs on Base (Chain ID 8453). All micro-payments and EIP-3009 vouchers on code402 are gas-sponsored.
Signed Receipts & Proof
Every session and subsequent x402 call produces an XDR-1 cryptographic receipt, auditable on-chain.
🌐 Alternative Funding Ramps & Direct Deposit
Where Coinbase Onramp is geographically unavailable
You can also fund your connected address with USDC on Base via any supported provider or direct exchange transfer:
💡 Direct Deposit: Send USDC directly to your wallet on the Base network. No memo/tag required. Never send over Ethereum mainnet without bridging.