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:
Retrieves the currently connected account the user has selected on Metamask. If it's the first time, a new is created and the account info is saved in snap state.
Parses the arguments that were passed such as the tokenId, amount, etc.
Calls the to burn tokens owned by the treasury account for both fungible and non-fungible token (NFT) types, thereby decreasing the total supply of the specified token.
This action cannot be called if this token was created without passing the supplyPublicKey
An example response:
const snapId = `npm:@hashgraph/hedera-wallet-snap`
const burnTokenAPI= async () => {
const externalAccountParams = {
externalAccount: {
accountIdOrEvmAddress: '0.0.12345',
curve: 'ED25519'
}
}
await window.ethereum.request({
method: 'wallet_invokeSnap',
params: {
snapId,
request: {
method: 'hts/burnToken',
params: {
network: 'testnet',
assetType: 'TOKEN', // TOKEN | NFT
tokenId: '0.0.4279119',
amount: 100,
serialNumbers?, // Optional param - only needed for NFTs and is of type Number[]
/*
Uncomment the below line if you want to connect
to a non-metamask account
*/
// ...externalAccountParams
}
}
}
})
}Returns the transaction receipt as response
You can also check out the API reference to learn how each API works.
{
"currentAccount": {
"metamaskEvmAddress": "0x0b3628d1b838993b5fceec8b2a26502e7a8e5241",
"externalEvmAddress": "",
"hederaAccountId": "0.0.3581604",
"hederaEvmAddress": "0xca53f9c93d30e0b7212d67901e5a24fb090d542b",
"publicKey": "0x0206022cea4c6dd6d2e7263b8802253971de922f5380661d97cba82dee66f57ad6",
"balance": {
"hbars": 97.39943836,
"timestamp": "Thu, 25 Apr 2024 18:24:30 GMT",
"tokens": {
"0.0.4279119": {
"balance": 100,
"decimals": 1,
"tokenId": "0.0.4279119",
"name": "Tuum",
"symbol": "TUUM",
"tokenType": "FUNGIBLE_COMMON",
"supplyType": "INFINITE",
"totalSupply": "100",
"maxSupply": "0"
}
}
},
"network": "testnet",
"mirrorNodeUrl": "https://testnet.mirrornode.hedera.com"
},
"receipt": {
"status": "SUCCESS",
"accountId": "",
"fileId": "",
"contractId": "",
"topicId": "",
"tokenId": "",
"scheduleId": "",
"exchangeRate": {
"hbars": 30000,
"cents": 358240,
"expirationTime": "Thu, 25 Apr 2024 19:00:00 GMT",
"exchangeRateInCents": 11.941333333333333
},
"topicSequenceNumber": "0",
"topicRunningHash": "",
"totalSupply": "500",
"scheduledTransactionId": "",
"serials": [],
"duplicates": [],
"children": []
}
}