Creating Private Key Wallets

You can easily create AA wallets for your users from private keys.

Private Keys

Ethers.js

import { ECDSAValidator } from "@zerodev/sdk";
import { PrivateKeySigner } from "@alchemy/aa-core";

// The validator
const ecdsaProvider = await ECDSAProvider.init({
  // ZeroDev projectId
  projectId,
  // The signer
  owner: PrivateKeySigner.privateKeyToAccountSigner(PRIVATE_KEY),
});

Example:

Full Code (Editable)

function PrivateKeyExample() { const [address, setAddress] = useState('') const [loading, setLoading] = useState(false) const [privateKey, setPrivateKey] = useState('0x468f0c80d5336c4a45be71fa19b77e9320dc0abaea4fd018e0c49aca90c1db78') const createWallet = async () => { setLoading(true) const ecdsaProvider = await ECDSAProvider.init({ projectId: defaultProjectId, owner: PrivateKeySigner.privateKeyToAccountSigner(privateKey), }) setAddress(await ecdsaProvider.getAddress()) setLoading(false) } return ( <div> <div> <input value={privateKey} size="80" onChange={(e) => setPrivateKey(e.target.value)}/> <button onClick={createWallet} disabled={loading}>{ loading ? 'loading...' : 'Create Wallet'}</button> </div> {address && <div> <label>Wallet: {address}</label> </div> } </div> ) }

function PrivateKeyExample() {
  const [address, setAddress] = useState('')
  const [loading, setLoading] = useState(false)
  const [privateKey, setPrivateKey] = useState('0x468f0c80d5336c4a45be71fa19b77e9320dc0abaea4fd018e0c49aca90c1db78')

  const createWallet = async () => {
    setLoading(true)
    const ecdsaProvider = await ECDSAProvider.init({
      projectId: defaultProjectId,
      owner: PrivateKeySigner.privateKeyToAccountSigner(privateKey),
    })
    setAddress(await ecdsaProvider.getAddress())
    setLoading(false)
  }

  return (
    <div>
      <div>
      <input value={privateKey} size="80" onChange={(e) => setPrivateKey(e.target.value)}/>
      <button onClick={createWallet} disabled={loading}>{ loading ? 'loading...' : 'Create Wallet'}</button>
      </div>
      {address && 
        <div>
          <label>Wallet: {address}</label>
        </div>
      }
    </div>
  )
}

Result

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Wagmi

import { ZeroDevConnector } from '@zerodev/wagmi'
import { PrivateKeySigner } from "@alchemy/aa-core";
const connector = new ZeroDevConnector({chains, options: {
  projectId: "<your-project-id>",
  owner: PrivateKeySigner.privateKeyToAccountSigner("<private-key>"),
}})

Example:

Full Code (Editable)

function WagmiPrivateKeyExample() { const { chains, publicClient, webSocketPublicClient } = configureChains( [polygonMumbai], [infuraProvider({apiKey: infuraApiKey})], ) const config = createConfig({ autoConnect: false, connectors: [ new ZeroDevConnector({chains, options: { projectId: defaultProjectId, owner: PrivateKeySigner.privateKeyToAccountSigner('0x468f0c80d5336c4a45be71fa19b77e9320dc0abaea4fd018e0c49aca90c1db78'), }}) ], publicClient, webSocketPublicClient, }) const ConnectButton = () => { const { connect, connectors, error, isLoading, pendingConnector } = useConnect() const { address, connector, isConnected } = useAccount() const { chain } = useNetwork() if (isConnected) { return ( <div> <div>{address}</div> <div>Connected to {connector.name}</div> <a href={`${chain.blockExplorers.default.url}/address/${address}`} target="_blank">Explorer</a> </div> ) } return ( <button disabled={isLoading} onClick={() => connect({connector: connectors[0]})}> {isLoading ? 'loading...' : 'Connect'} </button> ) } return ( <WagmiConfig config={config}> <ConnectButton /> </WagmiConfig> ) }

function WagmiPrivateKeyExample() {

  const { chains, publicClient, webSocketPublicClient } = configureChains(
    [polygonMumbai],
    [infuraProvider({apiKey: infuraApiKey})],
  )
  const config = createConfig({
    autoConnect: false,
    connectors: [
      new ZeroDevConnector({chains, options: {
        projectId: defaultProjectId,
        owner: PrivateKeySigner.privateKeyToAccountSigner('0x468f0c80d5336c4a45be71fa19b77e9320dc0abaea4fd018e0c49aca90c1db78'),
      }})
    ],
    publicClient,
    webSocketPublicClient,
  })

  const ConnectButton = () => {
    const { connect, connectors, error, isLoading, pendingConnector } = useConnect()
    const { address, connector, isConnected } = useAccount()
    const { chain } = useNetwork()

    if (isConnected) {
      return (
        <div>
          <div>{address}</div>
          <div>Connected to {connector.name}</div>
          <a href={`${chain.blockExplorers.default.url}/address/${address}`} target="_blank">Explorer</a>
        </div>
      )
    }
    return (
      <button disabled={isLoading} onClick={() => connect({connector: connectors[0]})}>
        {isLoading ? 'loading...' : 'Connect'}
      </button>
    )
  }
  return (
    <WagmiConfig config={config}>
      <ConnectButton />
    </WagmiConfig>
  )
}

Result

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