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Fund Your Project

Before your agent can make payments, the project needs a funded USDC balance. There are two ways to add funds: deposit USDC directly on-chain (recommended) or send fiat via a virtual bank account.

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Method 1: On-Chain USDC Deposit

The fastest way to fund your project. Send USDC on the Base network directly to your project’s wallet address.

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Get Your Deposit Address

Retrieve your project’s deposit address via the API or from the project dashboard at app.unwall.xyz. 
curl https://api.unwall.xyz/v1/stablecoin/address \
  -H "Authorization: Bearer aw_live_xxxxxxxxxxxx"
Response
{
  "chain": "base",
  "address": "0x742d35Cc6634C0532925a3b844Bc9e7595f2bD28",
  "currency": "usdc"
}

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Send USDC

Send USDC to the returned address on the Base network. You can send from any wallet, exchange, or bridge that supports Base.
1

Copy the deposit address

Copy the address from the API response or the project dashboard.
2

Send USDC on Base

From your wallet or exchange, send USDC to the address. Make sure you select the Base network.
3

Wait for confirmation

Deposits are confirmed via Bridge.xyz webhook, usually within a few minutes. Your project balance updates automatically.
Only send USDC on the Base network to this address. Sending other tokens or using the wrong network may result in lost funds.

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Method 2: Virtual Bank Account (Fiat On-Ramp)

If you prefer to fund with USD, you can create a virtual bank account that automatically converts incoming deposits to USDC.
1

Create a virtual bank account

From the project dashboard, navigate to Funding and create a virtual bank account. Bridge.xyz provisions a US bank account linked to your project.
2

Send USD via ACH or wire

Send USD to the virtual bank account from your bank. Both ACH transfers and wire transfers are supported.
3

Auto-conversion to USDC

Bridge.xyz automatically converts the incoming USD to USDC and credits your project wallet on Base chain.
ACH deposits typically take 1-3 business days to settle. Wire transfers are usually same-day. Your project balance updates once Bridge.xyz confirms the conversion.

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Checking Your Balance

After funding, verify your balance: 
curl https://api.unwall.xyz/v1/balance \
  -H "Authorization: Bearer aw_live_xxxxxxxxxxxx"
Response
{
  "project_id": "proj_abc123",
  "available_usdc": 5000000,
  "pending_usdc": 0,
  "available_usd": 500,
  "pending_usd": 0
}
USDC amounts are in micro-USDC (1 USDC = 1,000,000). So 5000000 = 5.00 USDC. USD amounts are in cents, so 500 = $5.00.

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Processing Times

MethodTypical Time
On-chain USDC depositMinutes (after on-chain confirmation)
Virtual bank account (ACH)1-3 business days
Virtual bank account (Wire)Same day

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Next Steps

Send a Payment

Use your funded balance to make payments via x402, USDC, or ACH.

x402 Protocol

Pay for API calls automatically with your USDC balance.