Aptos Snap

Aptos Snap is the application allowing users to directly manage Aptos within the MetaMask interface. Since Snaps is pre-release software, the alpha version of Aptos Snap is currently live on Metamask Flask only, a canary distribution for developers that provides access to upcoming features.

*Note: MetaMask Flask is an experimental playground for developers and is not to be confused with the normal MetaMask wallet app.

MetaMask Snaps Introduction

Snaps is a system that allows developers to safely build and expand the capabilities of MetaMask. It is a program that is run in an isolated environment with a limited set of capabilities, that can customize and modify MetaMask's wallet experience for end users. For example, a snap can add new APIs to MetaMask thus adding support for different blockchains or modify existing functionalities using internal APIs.

Additional information can be found here.

Usage

1. Enable Aptos Snap in your dapp

const result: boolean = await ethereum.request({
    method: 'wallet_enable',
    params: [
        {
            wallet_snap: {'npm:@keystonehq/aptossnap': {}},
        },
    ],
});

2. Get an Aptos Public Account

const result: string = await ethereum.request({
    method: 'wallet_invokeSnap',
    params: [
        "npm:@keystonehq/aptossnap",
        {
            method: 'aptso_getAccount'
        },
    ],
});

3. Sign Transaction

const result: { txId: string, txHex: string } = await ethereum.request({
    method: 'wallet_invokeSnap',
    params: [
        snapId,
        {
            method: 'aptos_signTransaction',
            params: {
                rawTransaction: bcsBytes // bcs serialized raw transaction bytes
            },
        },
    ],
})

Building

Build the snap and test it locally with the following command:

yarn build

Live Example

If you would like to integrate Aptos Snap into your dapp, you can use the following codes here.