A tool for creating a local blockchain for fast Ethereum development.

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Last updateLast update2022-01-11

⚠ Notice: This documentation describes the beta release of Ganache. If you are looking to install the stable version of Ganache you can find instructions at https://github.com/trufflesuite/ganache-cli-archive ⚠

A tool for creating a local blockchain for fast Ethereum development.

FeaturesGetting StartedDocumentationCommunityDockerContributingRelated


Ganache is an Ethereum simulator that makes developing Ethereum applications faster, easier, and safer. It includes all popular RPC functions and features (like events) and can be run deterministically to make development a breeze.

  • Fork any Ethereum network without waiting to sync
  • Ethereum json-rpc support
  • Snapshot/revert state
  • Mine blocks instantly, on demand, or at an interval
  • Fast-forward time
  • Impersonate any account (no private keys required!)
  • Listens for JSON-RPC 2.0 requests over HTTP/WebSockets
  • Programmatic use in Node.js
  • Pending Transactions

Getting Started

Ganache can be used from the command line, programmatically via Node.js, or in the browser.

Command line use

You must first install Node.js >= v10.13.0 and npm >= 6.4.1.

To install Ganache beta globally, run:

$ npm install [email protected] --global

For the latest stable release of ganache-cli, run:

$ npm install [email protected] --global

Once installed globally, you can start ganache right from your command line:

$ ganache-cli
Ganache CLI v6.12.1 (ganache-core: 2.13.1)

Available Accounts
(0) 0xe261e26aECcE52b3788Fac9625896FFbc6bb4424 (100 ETH)
(1) 0xcE16e8eb8F4BF2E65BA9536C07E305b912BAFaCF (100 ETH)
(2) 0x02f1c4C93AFEd946Cce5Ad7D34354A150bEfCFcF (100 ETH)
(3) 0x0B75F0b70076Fab3F18F94700Ecaf3B00fE528E7 (100 ETH)
(4) 0x7194d1F1d43c2c58302BB61a224D41B649e65C93 (100 ETH)
(5) 0xC9A2d92c5913eDEAd9a7C936C96631F0F2241063 (100 ETH)
(6) 0xD79BcDE5Cb11cECD1dfC6685B65690bE5b6a611e (100 ETH)
(7) 0xb6D080353f40dEcA2E67108087c356d3A1AfcD64 (100 ETH)
(8) 0x31A064DeeaD74DE7B9453beB4F780416D8859d3b (100 ETH)
(9) 0x37524a360a40C682F201Fb011DB7bbC8c8A247c6 (100 ETH)

Private Keys
(0) 0x7f109a9e3b0d8ecfba9cc23a3614433ce0fa7ddcc80f2a8f10b222179a5a80d6
(1) 0x6ec1f2e7d126a74a1d2ff9e1c5d90b92378c725e506651ff8bb8616a5c724628
(2) 0xb4d7f7e82f61d81c95985771b8abf518f9328d019c36849d4214b5f995d13814
(3) 0x941536648ac10d5734973e94df413c17809d6cc5e24cd11e947e685acfbd12ae
(4) 0x5829cf333ef66b6bdd34950f096cb24e06ef041c5f63e577b4f3362309125863
(5) 0x8fc4bffe2b40b2b7db7fd937736c4575a0925511d7a0a2dfc3274e8c17b41d20
(6) 0xb6c10e2baaeba1fa4a8b73644db4f28f4bf0912cceb6e8959f73bb423c33bd84
(7) 0xfe8875acb38f684b2025d5472445b8e4745705a9e7adc9b0485a05df790df700
(8) 0xbdc6e0a69f2921a78e9af930111334a41d3fab44653c8de0775572c526feea2d
(9) 0x3e215c3d2a59626a669ed04ec1700f36c05c9b216e592f58bbfd3d8aa6ea25f9

HD Wallet
Mnemonic:      candy maple velvet cake sugar cream honey rich smooth crumble sweet treat
Base HD Path:  m/44'/60'/0'/0/{account_index}

Default Gas Price

Gas Limit

Call Gas Limit

Listening on

To install Ganache beta into an npm project, run:

$ npm install ganache

You can then add Ganache to your package.json scripts:

"scripts": {
  "ganache": "ganache --wallet.seed myCustomSeed"

See Documentation for additional command line options.

Then start it:

$ npm run ganache

Programmatic use

You can use Ganache programmatically from Node.js. Install Ganache into your npm package:

$ npm install ganache

Then you can use ganache as an EIP-1193 provider only, an EIP-1193 provider and JSON-RPC web server, as a Web3 provider, or an ethers provider.

As an EIP-1193 provider only:

const ganache = require("ganache");

const options = {};
const provider = ganache.provider(options);
const accounts = await provider.request({ method: "eth_accounts", params: [] });

As an EIP-1193 provider and JSON-RPC web server:

const ganache = require("ganache");

const options = {};
const server = ganache.server(options);
const PORT = 8545;
server.listen(PORT, err => {
  if (err) throw err;

  console.log(`ganache listening on port ${PORT}...`);
  const provider = server.provider;
  const accounts = await provider.request({ method: "eth_accounts", params:[] });

As a web3.js provider:

To use ganache as a Web3 provider:

const Web3 = require("web3");
const ganache = require("ganache");

const web3 = new Web3(ganache.provider());

NOTE: depending on your web3 version, you may need to set a number of confirmation blocks

const web3 = new Web3(ganache.provider(), null, { transactionConfirmationBlocks: 1 });

As an ethers.js provider:

const ganache = require("ganache");

const provider = new ethers.providers.Web3Provider(ganache.provider());

Browser Use

You can also use Ganache in the browser by adding the following script to your HTML:

<script src="https://cdn.jsdelivr.net/npm/[email protected]{VERSION}/dist/web/ganache.min.js"></script>

NOTE: the {VERSION} in the above path needs to be replaced with a version number or tag that is listed in npm.

From there, Ganache is available in your browser for use:

const options = {};
const provider = Ganache.provider(options);


New RPC documentation coming soon! See https://github.com/trufflesuite/ganache/tree/master#options for Ganache v2 documentation.

Ganache Provider Events

In addition to EIP-1193's "message" event and the legacy "data" event, Ganache emits 3 additional events: "ganache:vm:tx:before", "ganache:vm:tx:step", and "ganache:vm:tx:after".

These events can be used to observe the lifecycle of any transaction executed via *sendTransaction, eth_call, debug_traceTransaction, or debug_storageRangeAt.

These share the event paradigm that Truffle uses, but without any of the wildcard handling, i.e., no "vm:*" support (for now).

Each of these events will emit a context object which is a unique object that can be used to identify a transaction over the course of its lifecycle. For example:

interface StepEvent {
  account: {
    nonce: bigint;
    balance: bigint;
    stateRoot: Buffer;
    codeHash: Buffer;
  address: Buffer;
  codeAddress: Buffer;
  depth: number;
  gasLeft: bigint;
  gasRefund: bigint;
  memory: Buffer;
  memoryWordCount: bigint;
  opcode: {
    name: string;
    fee: number;
  pc: number;
  returnStack: Buffer[];
  stack: Buffer[];

const contexts = new Map();
provider.on("ganache:vm:tx:before", (event: { context: {} }) => {
  contexts.set(event.context, []);
provider.on("ganache:vm:tx:step", (event: StepEvent) => {
provider.on("ganache:vm:tx:after", (event: { context: {} }) => {

The reason this context is necessary is that Ganache may run multiple transactions simultaneously, so "ganache:vm:tx:step" events from different transactions could be intermingled.

The above events will be emitted for eth_call, *sendTransaction, debug_traceTransaction, and debug_storageRangeAt.

Currently, we do not await the event listener's return value, however, we'll likely enable this in the future.



The simplest way to get started with the Docker image:

$ docker run --detach --publish 8545:8545 trufflesuite/ganache:beta

To pass options to Ganache through Docker simply add the arguments to the end of the run command, e.g.,

$ docker run --detach --publish 8545:8545 trufflesuite/ganache:latest --accounts 10 --debug

The Docker container adds an environment variable DOCKER=true; when this variable is set to true (case insensitive), Ganache uses a default hostname IP of instead of the normal default You can still specify a custom hostname however:

$ docker run --detach --publish 8545:8545 trufflesuite/ganache:latest --host XXX.XXX.XXX.XXX

To build and run the Docker container from source:

$ git clone https://github.com/trufflesuite/ganache.git && cd ganache


$ docker build --tag trufflesuite/ganache --file ./src/packages/ganache/Dockerfile .
$ docker run --publish 8545:8545 trufflesuite/ganache


See CONTRIBUTING.md for our guide to contributing to Ganache.