> ## Documentation Index
> Fetch the complete documentation index at: https://docs.argyle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# API enhancements

> New fields added to bank accounts endpoints.

<div className="release-meta">
  <span className="release-date">May 19, 2026</span>
  <span className="release-tag" data-changelog-tag="api">API</span>
</div>

<img src="https://mintcdn.com/argyle/spW0uZwUC4bDyMgL/images/changelog-generic/api.png?fit=max&auto=format&n=spW0uZwUC4bDyMgL&q=85&s=1537fc09ccdfb211eeafbc1178e91f0b" alt="API update illustration" width="1030" height="290" data-path="images/changelog-generic/api.png" />

On **May 28, 2026**, the following fields will be added to the [bank accounts](https://docs.argyle.com/api-reference/bank-accounts/list-all-bank-accounts) endpoints:

* `real_account_number_last4` — Last four digits of the account number.
* `balance` — Account balance amount.
* `balance_date` — Timestamp for when the balance was recorded.
* `last_updated_date` — Timestamp for when the account was last updated.
* `market_segment` — Indicates whether the account is `personal` or `business`.
* `last_transaction_date` — Timestamp of the latest transaction.
* `oldest_transaction_date` — Timestamp of the oldest transaction.