Checkbook API Docs

Welcome to Checkbook's API! Just like our product, our API is simple to use and understand.

You'll find comprehensive guides and documentation to help you start working with Checkbook as quickly as possible, as well as support if you get stuck. Let's jump right in!

Guides    API Reference

Add a Bank Account

There are two options for adding a bank account via the API:

  • Manual Verification, which consists of making two micro-deposits on the newly added bank account, which will show up the next working day. Once the micro-deposits have arrived in the bank account, you need to send those values back to us in order to prove the ownership of the account.
  • Instant Account Verification, also known as IAV, which consists of using online banking credentials to login to the bank that holds the account. If the account is protected by multi-factor authentication, also known as MFA, some additional questions need to be answered in order to connect. Once the connection is established, the bank account can be added instantly from the list of accounts available.
  • Use Plaid Auth, to allow your customers to use Plaid Link to authenticate with their financial institution and select the bank account they wish to use for payment transactions.


If you are a Marketplace and are on-boarding users with pre-verified bank accounts then you do not need to re-verify bank accounts. Please contact us at [email protected] and we will get back to you on the settings you need to use for pre-verified bank accounts.

Updated 8 months ago

Add a Bank Account

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