import { base } from '@base-org/account';

try {
  const subscription = await base.subscription.subscribe({
    recurringCharge: "9.99",
    subscriptionOwner: "0xFe21034794A5a574B94fE4fDfD16e005F1C96e51",
    periodInDays: 30,
    testnet: false
  });
  
  console.log(`Subscription ID: ${subscription.id}`);
  console.log(`Payer: ${subscription.subscriptionPayer}`);
  console.log(`Monthly charge: $${subscription.recurringCharge}`);
} catch (error) {
  console.error(`Subscription failed: ${error.message}`);
}

{
  id: "0x71319cd488f8e4f24687711ec5c95d9e0c1bacbf5c1064942937eba4c7cf2984",
  subscriptionOwner: "0xFe21034794A5a574B94fE4fDfD16e005F1C96e51",
  subscriptionPayer: "0x742d35Cc4Bf53E0e6C42E5d9F0A8D2F6D8A8B7C9",
  recurringCharge: "9.99",
  periodInDays: 30
}
Defined in the Base Account SDK
The subscribe function creates recurring USDC subscriptions using spend permissions on the Base network. This enables you to charge users periodically without requiring approval for each transaction. No fees for merchants or users.

​
Parameters

​
recurringCharge
string
required
Amount of USDC to charge per period (e.g., “10.50”). Maximum 6 decimal places.
​
subscriptionOwner
string
required
Ethereum address that will be the spender (your application’s address).Pattern: ^0x[0-9a-fA-F]{40}$
​
periodInDays
number
The period in days for the subscription (e.g., 30 for monthly). Default: 30
​
testnet
boolean
Set to true to use Base Sepolia testnet instead of mainnet. Default: false
​
telemetry
boolean
Whether to enable telemetry logging. Default: true

​
Returns

​
result
SubscriptionResult
Subscription details on success. The function throws an error on failure.

​
Errors

The subscribe function throws an error when subscription creation fails. The error object contains a message explaining what went wrong. 
import { base } from '@base-org/account';

try {
  const subscription = await base.subscription.subscribe({
    recurringCharge: "9.99",
    subscriptionOwner: "0xFe21034794A5a574B94fE4fDfD16e005F1C96e51",
    periodInDays: 30,
    testnet: false
  });
  
  console.log(`Subscription ID: ${subscription.id}`);
  console.log(`Payer: ${subscription.subscriptionPayer}`);
  console.log(`Monthly charge: $${subscription.recurringCharge}`);
} catch (error) {
  console.error(`Subscription failed: ${error.message}`);
}

{
  id: "0x71319cd488f8e4f24687711ec5c95d9e0c1bacbf5c1064942937eba4c7cf2984",
  subscriptionOwner: "0xFe21034794A5a574B94fE4fDfD16e005F1C96e51",
  subscriptionPayer: "0x742d35Cc4Bf53E0e6C42E5d9F0A8D2F6D8A8B7C9",
  recurringCharge: "9.99",
  periodInDays: 30
}

​
Error Handling

Always wrap calls to subscribe in a try-catch block: 
try {
  const subscription = await base.subscription.subscribe({
    recurringCharge: "19.99",
    subscriptionOwner: "0xYourAppAddress",
    periodInDays: 30
  });
  // Subscription created successfully
  saveSubscriptionId(subscription.id); // Save for future charges
} catch (error) {
  // Handle subscription failure
  console.error(`Failed to create subscription: ${error.message}`);
}