stakeHbar

How to call the API from an app

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:

const snapId = `npm:@hashgraph/hedera-wallet-snap`

const stakeHbarAPI = async () => {
  const externalAccountParams = {
    externalAccount: {
      accountIdOrEvmAddress: '0.0.12345',
      curve: 'ED25519'
    }
  }

  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'stakeHbar',
        params: {
          network: 'testnet',
          nodeId: 0
          /* 
            Uncomment the below line if you want to connect 
            to a non-metamask account
          */
          // ...externalAccountParams
        }
      }
    }
  })
}

You must pass in either "nodeId" or "accountId" but not both.

To learn about what it means to stake to a node vs an account, please refer to Staking Info Documentation.

Note that you can also call this API to stake to another Account Id instead of a Node. To do that, you would just pass in accountId like this:

const snapId = `npm:@hashgraph/hedera-wallet-snap`

  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'stakeHbar',
        params: {
          network: 'testnet',
          accountId: '0.0.1',
        }
      }
    }
  })
}

This would stake to the account Id 0.0.1.

Note that you can also call this API to unstake your Hbar from a node or an accountId. This basically changes the account property for declining staking reward. To do that, you would just pass in null to both nodeId and accountId

const snapId = `npm:@hashgraph/hedera-wallet-snap`

  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'stakeHbar',
        params: {
          network: 'testnet',
          nodeId: null,
          accountId: null,
        }
      }
    }
  })
}

This would make it so that you stop getting staking rewards.

What the API does

1. 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.

2. Calls the Hedera SDK Update Account API to change the property related to staking.

3. Returns the transaction receipt as response

Some example responses:

For a hedera account id 0.0.4559:

{
  "currentAccount": {
    "hederaAccountId": "0.0.4559",
    "hederaEvmAddress": "0x3ba201df50314e4702d4d92b52d304ee63bfca23",
    "balance": {
      "hbars": 89.60420503,
      "timestamp": "2024-02-01T21:35:21.826Z",
      "tokens": {}
    },
    "network": "testnet"
  },
  "receipt": {
    "status": "SUCCESS",
    "accountId": "",
    "fileId": "",
    "contractId": "",
    "topicId": "",
    "tokenId": "",
    "scheduleId": "",
    "exchangeRate": {
      "hbars": 1,
      "cents": 12,
      "expirationTime": "Mon, 25 Nov 1963 17:31:44 GMT",
      "exchangeRateInCents": 12
    },
    "topicSequenceNumber": "0",
    "topicRunningHash": "",
    "totalSupply": "0",
    "scheduledTransactionId": "",
    "serials": [],
    "duplicates": [],
    "children": []
  }
}

Stake Hbar Live Demo on CodePen

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.