Hedera Wallet Snap connects to your currently connected Metamask account by default. To learn how apps can connect to Hedera Wallet Snap using a non-metamask(external) account, refer to this documentation.
Then, depending on whether you're trying to connect to a metamask account or a non-metamask account, you can call the snap API in the following way:
constsnapId=`npm:@hashgraph/hedera-wallet-snap`constcreateTokenAPI=async () => {constexternalAccountParams= { externalAccount: { accountIdOrEvmAddress:'0.0.12345', curve:'ED25519' } }awaitwindow.ethereum.request({ method:'wallet_invokeSnap', params: { snapId, request: { method:'hts/createToken', params: { network:'testnet', assetType:'TOKEN',// TOKEN | NFT name:'Tuum', symbol:'TUUM', decimals:1, supplyType:'INFINITE',// FINITE | INFINITE initialSupply?,// Optional param - type: number kycPublicKey?,// Optional param - type: string freezePublicKey?,// Optional param - type: string pausePublicKey?,// Optional param - type: string wipePublicKey?,// Optional param - type: string supplyPublicKey?,// Optional param - type: string feeSchedulePublicKey?,// Optional param - type: string freezeDefault?,// Optional param - type: boolean expirationTime?,// Optional param - type: string autoRenewAccountId?,// Optional param - type: string tokenMemo?,// Optional param - type: string customFees?,// Optional param - type: TokenCustomFee/* type TokenCustomFee = { feeCollectorAccountId: string; // Sets the fee collector account ID that collects the fee hbarAmount?: number; // Set the amount of HBAR to be collected tokenAmount?: number; // Sets the amount of tokens to be collected as the fee denominatingTokenId?: string; // The ID of the token used to charge the fee. The denomination of the fee is taken as HBAR if left unset
allCollectorsAreExempt?: boolean; // If true, exempts all the token's fee collector accounts from this fee
}; */ maxSupply?,// Optional param - type: number/* Uncomment the below line if you want to connect to a non-metamask account */// ...externalAccountParams } } } })}
supplyPublicKey must be passed for the NFT assetType
maxSupply cannot be passed for INFINITE supply type
If you don't pass in supplyPublicKey you will not be able to mint or burn tokens
What the API does
Retrieves the currently connected account the user has selected on Metamask. If it's the first time, a new snap account is created and the account info is saved in snap state.
Parses the arguments that were passed such as the name of the token, symbol, decimals, initialSupply, etc
Calls the Hedera SDK Create Token API to create a new fungible or non-fungible token (NFT) on the Hedera network.
Some things to keep in mind while interacting with the above demo
If you're getting any errors with the live demo, make sure you go through the FAQs section to learn about what you may be missing. You need to install Metamask in your browser for the live demo to work
To ease the integration of Hedera Wallet Snap on an application, we have created a template web application that you can run locally and check out the code in its entirety to learn how you can integrate and interact with various APIs exposed by Hedera Wallet Snap. Check out the full source code at template application github repository.
You can also check out the API reference to learn how each API works.