Safe Batch Transaction Builder

Build and export batch transactions for Safe (Gnosis Safe) multi-sig wallets

Transaction #1

To Address

Value (in Wei)

Operation

Data (Hex)

1. What is Safe Batch Builder?

Safe (formerly Gnosis Safe) is a popular multi-signature wallet for Ethereum and other EVM chains. The Batch Builder allows you to combine multiple transactions into a single batch, saving gas and time by requiring only one signature round for all transactions.

2. How does it work?

JSON Generation

This tool generates a JSON file compatible with Safe's Transaction Builder app. You can:

Add multiple transactions with different recipients and data
Specify value (ETH/native token) to send with each transaction
Choose between Call (0) and DelegateCall (1) operations
Export as JSON to import directly into Safe UI

The generated JSON follows Safe's transaction batch format v1.0, ensuring compatibility with the Safe Transaction Builder.

Transaction Operations

Call (0):

Standard external call to another contract. Most common operation type.

DelegateCall (1):

Executes code from another contract in the context of the Safe. Use with extreme caution as it can modify Safe storage.

3. Examples

Multi-token transfer (USDC + DAI)

Transfer 1000 USDC to 0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0
and 500 DAI to 0x8ba1f109551bd432803012645Ac136ddd64DBA720
via Safe proxy batch

Uniswap LP approval & swap

Approve 100 WETH to Uniswap V3 Router
(0xE592427A0AEce92De3Edee1F18E0157C05861564)
and execute swap in one Safe batch

Aave governance actions

Execute multiple governance proposals through Safe:
- Delegate voting power
- Claim rewards from AAVE staking
  (0x4da27a545c0c5B758a6BA100e3a049001de870f5)
- Rebalance collateral