Integration Instructions

Or how to integrate SubWallet and other Polkadot and Kusama wallets into your DApps


SubWallet, Polkadot{.js} and Talisman extensions allow DApp to connect with them by publicizing their interaction in object injectedWeb3 of window browser.

  • SubWallet (public with properties subwallet-js)

  • Polkadot{.js} (public with properties polkadot-js)

  • Talisman (public with properties talisman)

You can open injectedWeb3 object in Chrome devtools.

How to integrate wallets into DApps

Please refer to our examples below:

  • Check extension's activation:

    • When a wallet extension is active in browser it will modify window.injectedWeb3 by adding its interaction with a specific name.

    • For example, check SubWallet extension by these code: window.injectedWeb3 && window.injectedWeb3['subwallet-js']

  • Enable intergation into your DApp by method enable() of extension interaction object.

    const SubWalletExtension = window.injectedWeb3['subwallet-js']
    const extension = await SubWalletExtension.enable()
    • After running, these code extension will show popup confirmation to confirm integration into your DApp

  • After enabling, extension variable can contain these objects:

    • accounts: Allow getting accounts' data with 2 methods, get and subscribe.

    • signer: Allow signing data with 2 methods, signPayload and signRaw.

    • metadata: Allow getting additional metadata list with method get and adding/updating with method provide.

If your DApp is writen in typescript, you need to add package @polkadot/extension-inject to your package.json to get extensions interfaces.

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