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

# Application Credentials Broker (ACB)

> Version history for the Syteca Application Credentials Broker — the REST API tool that lets applications retrieve secret data without logging in to the Management Tool.

The **Application Credentials Broker (ACB)** is the Syteca REST API tool that lets applications retrieve secret data securely without logging in to the Management Tool. This page tracks every ACB release.

For details on using ACB, see [ACB overview](/docs/api/acb/overview).

## Application Credentials Broker 1.4 (Build 1.4.0.247)

Released alongside Syteca 7.24.

### Improvements:

* **ACB** - Heartbeat feature improvements.

### Issues Fixed:

* **ACB** - two issues fixed:
  * 'The remote server returned an error: (500)' error appears while trying to use the Syteca Application Credentials Broker.
  * Certain high priority bugfixes.

## Application Credentials Broker 1.3.5 (Build 1.3.5.235)

Released alongside Syteca 7.23.

### New Features:

* **Added User Management API** for ACB, providing endpoints for managing users, including creation, updates, and deletion.

## Application Credentials Broker 1.3.2 (Build 1.3.2.228)

Released alongside Syteca 7.23.

### Issue Fixed:

* **ACB** - Syteca Application Credentials Broker installation wizard expects only "Default Web Site"

## ACB 1.3 (Build 1.3.0.209)

Released alongside Syteca 7.23.

### Improvements

* **Many new API endpoints** are now available — not only to get, but also to add and manage, secrets' and folders' data. See [user management endpoints](/docs/api/acb/overview) and [API examples](/docs/api/acb/overview).

### Issues fixed

* **Vulnerabilities** — various vulnerabilities identified have been fixed.

## ACB 1.2 (Build 1.2.0.146)

Released alongside Syteca 7.22.

### Improvements

* **Rotation endpoints for the default admin user.** New API endpoints are now available to use an external application for rotation of the default "admin" user's password. See [ACB rotation endpoints](/docs/api/acb/admin-password-rotation).
* **Security improvements** across the ACB API.
* **Token generation** — all user types can now generate Refresh Tokens and Authorization (Access) Tokens to use ACB (not only Application Account users).

## Related

<CardGroup cols={2}>
  <Card title="ACB overview" icon="plug" href="/docs/api/acb/overview">
    What ACB does and how to start using it.
  </Card>

  <Card title="ACB examples" icon="code" href="/docs/api/acb/overview">
    Concrete API call examples.
  </Card>

  <Card title="All Syteca releases" icon="history" href="/docs/release-notes/overview">
    Main Syteca version history.
  </Card>
</CardGroup>