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Flow Chrome Extension Wallet Example

An example and guide showing how to build an FCL-compatible wallet extension on Flow.
Read the docs »

What is FCL? · Report a Bug

This guide and sample is based on a winning FLIP Fest submission from the ZayCodes team.

Getting started

Run all commands from the root directory.

Install

npm i

Build the extension

npm run build --workspace fcl-wallet-extension-demo

Add the extension to Chrome

  • In Chrome, navigate to chrome://extensions
  • Enable the "Developer mode" toggle
  • Click on "Load unpacked"
  • Select the packages/extension/build folder

Refreshing the extension

If you make changes to the code, rebuild the extension with npm run dev --workspace fcl-wallet-extension-demo and then click the refresh icon in the Chrome extensions page.

Start the harness app

The harness is a barebones web app that allows you to connect to the extension and send transactions.

npm run start --workspace fcl-harness

Open http://localhost:3000 to view it in the browser.

Build your own wallet

See the full guide to building an extension on Flow here.