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0.2.15 • Public • Published


No more private keys inside .env files! Truffle Dashboard lets you sign messages with MetaMask and provides insights for better dapp development. 🔒

This plugin makes it easy to access all the features of Truffle Dashboard, including better security and high-quality transaction decoding.


This plugin automatically adds a --network truffleDashboard to your Hardhat project and tells Truffle Dashboard all the information it needs about your smart contracts.

If you're used to Truffle Dashboard without this plugin, you'll notice that this plugin enables you to see decoded transactions (i.e., function name and all argument values). Compare before vs. after installing this plugin:

Before and after using the Truffle Dashboard Hardhat plugin

@truffle/dashboard-hardhat-plugin works by hooking into npx hardhat compile; every time you compile your project, this plugin takes the resulting build-info and sends it to Truffle Dashboard. Under the hood, Truffle Dashboard uses the advanced @truffle/decoder library to decode your smart contract operations, giving you improved visibility before you issue a signature with your browser-based wallet.

Besides just relaying project info to Truffle Dashboard, this plugin also eliminates the need to add a custom network to your config. Instead, it automatically adds the truffleDashboard network for you, so you don't need to note the JSON-RPC url, etc.

Please see below if you're looking to customize network settings (like timeout or httpHeaders, if these are things you need). Otherwise, keep reading to learn how to get started. Enjoy!


You can install this plugin with npm (or yarn) by running:

npm install --save-dev @truffle/dashboard-hardhat-plugin

Then simply import the plugin in your hardhat.config.ts:

import "@truffle/dashboard-hardhat-plugin";


This plugin assumes you have Truffle installed (either globally or in a local project context). If not, you can install it with npm i -g truffle. Beyond this you'll be able to start Truffle Dashboard with truffle dashboard. For reference, more information on using the Truffle Dashboard can be found here.

Alternatively, you can skip the installation and fetch (and run) it remotely with npx truffle dashboard.

This plugin automatically tells Hardhat about the truffleDashboard network, so you don't need to add this network to your hardhat.config.ts yourself. This means you can get started quickly by just specifying --network truffleDashboard when running your usual Hardhat commands (e.g. npx hardhat run ./scripts/deploy-contracts.ts --network truffleDashboard). This managed network includes the url property (default "http://localhost:24012/rpc") and a few other sensible defaults for this workflow.

If you don't like this plugin's default network configuration (is --network truffleDashboard too long?), then please see the next section for information on how to modify this.

Note on request timeouts: Signing transactions with MetaMask is slower than Hardhat's computing signatures automatically. For this reason, @truffle/dashboard-hardhat-plugin disables request timeouts for the truffleDashboard network. You can override this if you want the timeout anyway (see below!).


ℹ️ This section is only about configuring this plugin. If you want to customize Truffle Dashboard itself (e.g., custom host or port), then please ensure you have a truffle-config.js file with your preferred settings in your Hardhat project directory. See the truffle-config.js#dashboard reference docs to learn more.

To customize @truffle/dashboard-hardhat-plugin, add a truffle section to your Hardhat config. This namespace can contain the following fields (both are optional):

  • dashboardNetworkName (default: "truffleDashboard"): Specify the name of the Truffle Dashboard network, e.g. via the --network <...> command-line option.

  • dashboardNetworkConfig: A subset of the usual Hardhat network configuration settings.

    You can use this to override managed network behavior for any fields documented by Hardhat's JSON-RPC based networks reference except chainId, from, accounts, and url. (This plugin supplies url; the other three fields are meaningless in the Truffle Dashboard signing workflow.)

    All dashboardNetworkConfig properties are optional. The following field has a different default than what Hardhat normally provides:

    • timeout (default: 0; i.e., no timeout): Hardhat's normal default value for this is 40000 (40 seconds)


Assuming the above is all looking good, any subsequent compilations via npx hardhat compile will send the compiled artifacts to Truffle Dashboard. Subsequently, any deployments (or transactions via scripts) that target the truffleDashboard network will now send them to Truffle Dashboard for signing via your browser-based wallet.

⚠️ Please ensure your browser-based wallet is unlocked for transactions to be received. Otherwise, you might notice the error Cannot read properties of null (reading 'sendTransaction') when running Hardhat commands.

npx hardhat run scripts/deploy.ts --network truffleDashboard

Truffle Dashboard


As always, if you have any questions or run into any issues, please reach out to us on our Github Discussion board or on Twitter.

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