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Documentation Index

Fetch the complete documentation index at: https://eco.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

This recipe gives a user one permanent address that auto-routes any USDC sent to it to a destination on a different chain. The sender makes a normal ERC-20 transfer — no bridge UI, no signature, no contract call.

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When to use

  • Exchanges adding Solana withdrawal support
  • Wallets giving users a “deposit anywhere, land on Solana” address
  • Any flow where the funder is not the user (sweeping, payroll, partner deposits)

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1. Generate a deposit address

curl -X POST https://deposit-addresses.eco.com/api/v1/depositAddresses/solana \
  -H "Content-Type: application/json" \
  -d '{
    "chainId": 8453,
    "solanaAddress": "YOUR_SOLANA_ADDRESS",
    "depositor": "YOUR_EVM_ADDRESS"
  }'
Response: 
{
  "data": {
    "evmDepositAddress": "0x...",
    "isDeployed": false
  }
}
The evmDepositAddress is deterministic — same inputs always return the same address. You can show it to the user before any contract is deployed.

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2. Send USDC to the address

The user (or any third party) makes a vanilla ERC-20 transfer() to evmDepositAddress on Base: 
import { createWalletClient, http, parseUnits, erc20Abi } from 'viem';
import { base } from 'viem/chains';

const walletClient = createWalletClient({ chain: base, transport: http() });

await walletClient.writeContract({
  address: BASE_USDC,
  abi: erc20Abi,
  functionName: 'transfer',
  args: [evmDepositAddress, parseUnits('100', 6)],
});

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3. The address auto-routes

On first deposit, the contract deploys (the deposit address pays gas, not the sender). The contract calls createIntent(), which publishes a Routes intent. Solvers compete to fulfill on Solana.

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4. Confirm delivery

Poll the deposit address record to check isDeployed and lastCheckedBalance: 
curl https://deposit-addresses.eco.com/api/v1/depositAddresses/evmAddress/0x...
See the Solana Deposit Addresses API for the full deposit-address endpoint reference. You’ve successfully created an auto-routing deposit address.