External Plugin

This is a third-party plugin. Please report issues in its GitHub Repository(opens new window)

# Hardhat ABI Exporter

Export Ethereum smart contract ABIs on compilation via Hardhat.

Versions of this plugin prior to 2.0.0 were released as buidler-abi-exporter.

# Installation

yarn add --dev hardhat-abi-exporter

# Usage

Load plugin in Hardhat config:


Add configuration under the abiExporter key:

option description default
path path to ABI export directory (relative to Hardhat root) './abi'
clear whether to delete old files in path on compilation false
flat whether to flatten output directory (may cause name collisions) false
only Array of String matchers used to select included contracts, defaults to all contracts if length is 0 []
except Array of String matchers used to exclude contracts []
spacing number of spaces per indentation level of formatted output 2
pretty whether to use interface-style formatting of output for better readability false
abiExporter: {
  path: './data/abi',
  clear: true,
  flat: true,
  only: [':ERC20$'],
  spacing: 2,
  pretty: true,

The path directory will be created if it does not exist.

The clear option is set to false by default because it represents a destructive action, but should be set to true in most cases.

ABIs files are saved in the format [CONTRACT_NAME].json.