Batch Contract Call Script Generator

WHAT IT DOES

Batch Contract Call Script Generator is a developer-focused tool that builds executable batch contract call scripts and calldata from user-provided contract ABIs, addresses, functions, and parameters. It accepts a contract ABI, a target contract address, a function name, and parameter values, then encodes the function call into calldata using ethers.js ABI encoding. Users can add multiple calls to a batch, and the tool generates an executable JavaScript script that sequentially executes each call using ethers.js. The tool also outputs calldata-only format for use with multicall contracts, and JSON format for integration with other tools. This enables developers to quickly generate batch execution scripts for contract interactions, saving time on manual calldata encoding and script writing.

HOW TO USE

Paste the contract ABI (JSON format) into the "Contract ABI" text area. Enter the contract address, function name, and parameters as a JSON array. Click "Add to batch" to add the call to the batch. Repeat for multiple calls. Click "Generate script" to produce the batch execution script. The tool will display the generated script in three formats: an executable JavaScript script, a calldata-only format, and a JSON format. Use the copy buttons to copy each format, or download the script as a .js file. The generated script uses ethers.js to connect to an RPC provider and execute each call sequentially.

TECHNICAL NOTE: ABI ENCODING AND CALLDATA GENERATION

The tool uses ethers.js ABI encoding to generate calldata from the provided ABI, function name, and parameters. It first parses the ABI to locate the function definition, extracts the input parameter types, and uses the ethers.utils.Interface class to encode the function call. If no ABI is provided, the tool attempts to auto-detect parameter types based on the input values (address, uint256, bytes, string) and generates calldata using a fallback encoding. The tool then builds the batch script using the generated calldata, with sequential transaction execution using ethers.js. The script includes error handling and confirmation logging for each call.

WHAT IT CANNOT SEE

The tool cannot execute batch calls directly; it only generates scripts. It cannot verify that generated scripts will succeed on-chain, as deployment depends on network conditions and contract state. It cannot handle complex nested calls or cross-contract dependencies. The tool is limited to the accuracy of the provided ABI; incorrect ABIs will produce incorrect calldata. It cannot generate scripts for non-EVM chains. It cannot handle functions with dynamic or complex parameter types (e.g., nested arrays, structs) without proper validation. It cannot guarantee gas efficiency of the generated script. The tool does not validate that the contract address exists or that the function is callable.

PLEASE NOTE

This tool is designed exclusively for EVM-compatible chains (Ethereum, Polygon, BNB Chain, Arbitrum, Optimism, Avalanche C-Chain, etc.). It does not support non-EVM blockchains. The generated scripts require ethers.js to be installed in the execution environment. Always verify the generated calldata and script before execution. The tool provides no warranty that the generated scripts will execute successfully; users are responsible for testing in a safe environment before mainnet execution.