Documentation Index
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TypeScript utilities for integrating CoW Protocol with Balancer Vault
manageUserBalance and batchSwap:
const VAULT_INTERFACE: Interface;
| Contract | Address |
|---|---|
| Balancer Vault | 0xBA12222222228d8Ba445958a75a0704d566BF2C8 |
| CoW Protocol Vault Relayer | 0xC92E8bdf79f0507f65a392b0ab4667716BFE0110 |
async function grantRequiredRoles(
vault: Contract,
vaultRelayerAddress: string
): Promise<void>;
| Type | Description | Gas Cost |
|---|---|---|
| ERC20 | Standard transfers requiring token approval | Standard |
| EXTERNAL | Leverages existing Vault approvals | Reduced |
| INTERNAL | Uses Vault internal balances | Lowest |
import { ethers } from "ethers";
const provider = new ethers.providers.JsonRpcProvider("YOUR_RPC_URL");
// Balancer Vault on mainnet
const vaultAddress = "0xBA12222222228d8Ba445958a75a0704d566BF2C8";
const vaultRelayer = "0xC92E8bdf79f0507f65a392b0ab4667716BFE0110";
// Check internal balance
const vault = new ethers.Contract(vaultAddress, VAULT_INTERFACE, provider);
INTERNAL or EXTERNAL balance types may expose users to risk. The CoW Protocol API rejects orders using these balance types on affected networks. Always use ERC20 balance type unless you have verified that the Balancer Vault on your target network is safe (e.g., Plasma, which uses a non-compromised deployment).Was this page helpful?