# Find Your Current API Version

> How to identify which API version your Kiteworks integration is currently using by searching your source code for the version header.

Upgrade Guides

# Check Your API Version

Before you start any API upgrade, you need to know which version your integration is currently targeting. This page walks you through how to find that information.

## Search Your Source Code

Search your application's source code for the API version in two places:

1. The `X-Accellion-Version` HTTP header value — this is the version explicitly sent on every request.
2. The `apiVersion` query parameter — an alternative supported on some endpoints.

bash Copy

```bash
# Find the version header in your code
grep -r "X-Accellion-Version" ./src

# Find the apiVersion query parameter
grep -r "apiVersion" ./src
```

When the header is set explicitly, it looks like this:

cURL Python

check-version.sh Copy

```bash
curl -s -H "Authorization: Bearer $TOKEN" \
     -H "X-Accellion-Version: 28" \
     "https://your-instance.kiteworks.com/rest/folders/top"
```

check_version.py Copy

```python
headers = {
    "Authorization": f"Bearer {access_token}",
    "X-Accellion-Version": "28",   # ← this is what you're looking for
}
```

## What's next

> Once you know your current version, return to the upgrade guide that matches your migration path.

[Upgrade to OAuth 2.0

Update your OAuth 2.0 flow and token handling to comply with the v28 authentication requirements.](upgrade-auth-flow.html)

[Upgrade to API v28

A full walkthrough of the breaking changes in v28 and the code updates required to migrate your integration.](upgrade-api-v28.html)

[Update Files & Folders to UUID (v18 to v19+)

How to update file and folder ID references from integer IDs to UUIDs in your integration code.](upgrade-uuid-files-folders.html)