wallet_sendPreparedCalls

type Request = {
  method: 'wallet_sendPreparedCalls',
  params: [{
    /** Chain ID to send the calls to. */
    chainId: `0x${string}`;
    /** Data to be forwarded from `wallet_prepareCalls`. */
    context: { quote: unknown };
    /** Key that signed the digest and produced the signature. */
    key: {
      publicKey: `0x${string}`;
      type: 'address' | 'secp256k1' | 'p256' | 'webauthn-256';
    };
    /** Signature. */
    signature: `0x${string}`;
  }]
}

type Response = {
  /** ID of the bundle. */
  id: string;
}[]

import { Porto } from 'porto'
import { PublicKey, Signature, WebCryptoP256 } from 'ox'
 
const { provider } = Porto.create()
 
const { publicKey, privateKey } = await WebCryptoP256.createKeyPair()
 
const { digest, ...request } = await provider.request({
  method: 'wallet_prepareCalls',
  params: [{
    calls: [{
      to: '0xcafebabecafebabecafebabecafebabecafebabe',
      value: '0x12345678',
    }],
    key: {
      publicKey: PublicKey.toHex(publicKey),
      type: 'p256'
    }
  }]
})
 
const signature = await WebCryptoP256.sign({
  payload: digest,
  privateKey,
})
 
const response = await provider.request({ 
  method: 'wallet_sendPreparedCalls', 
  params: [{ 
    ...request, 
    signature: Signature.toHex(signature) 
  }] 
})