import { prepareSpendCallData } from "@base-org/account/spend-permission";

const spendCalls = await prepareSpendCallData({
  permission,
  amount: 10_000n, // optional
});

// If supported, submit both in a batch via wallet_sendCalls
await provider.request({
  method: "wallet_sendCalls",
  params: [
    {
      version: "2.0",
      atomicRequired: true,
      from: spender,
      calls: spendCalls,
    },
  ],
});

// Or submit sequentially with eth_sendTransaction
for (const call of spendCalls) {
  await provider.request({
    method: "eth_sendTransaction",
    params: [{ ...call, from: spender }],
  });
}
Defined in the Base Account SDK
Returns one or two calls your app’s spender can submit to execute a spend. If the permission is not yet registered onchain, an approveWithSignature call is prepended before the spend call.

​
Parameters

​
permission
SpendPermission
required
Signed permission returned from requestSpendPermission or fetched via fetchPermissions.
​
amount
bigint
Amount to spend (in wei). Omit to spend the remaining allowance.

​
Returns

​
result
Call[]
Array of calls to submit in order.
import { prepareSpendCallData } from "@base-org/account/spend-permission";

const spendCalls = await prepareSpendCallData({
  permission,
  amount: 10_000n, // optional
});

// If supported, submit both in a batch via wallet_sendCalls
await provider.request({
  method: "wallet_sendCalls",
  params: [
    {
      version: "2.0",
      atomicRequired: true,
      from: spender,
      calls: spendCalls,
    },
  ],
});

// Or submit sequentially with eth_sendTransaction
for (const call of spendCalls) {
  await provider.request({
    method: "eth_sendTransaction",
    params: [{ ...call, from: spender }],
  });
}

​
Error Handling

Always wrap the call in a try-catch block to handle these errors gracefully.
Use getPermissionStatus to check isActive and remainingSpend before preparing a spend.