# \[unmaintained] Software Development Kits (SDKs)

{% hint style="warning" %}
We're stopping the maintenance of the official bunq SDKs. While these libraries helped many developers get started, we’ve seen that the vast majority of developers integrate **directly** with the **bunq API** rather than through the SDKs.

As a result, our efforts naturally shifted toward improving the **API itself** and **its documentation** to accelerate improvements and better support the majority of developers building on our platform.

Read more here: <https://help.bunq.com/articles/sdk-deprecation>
{% endhint %}

#### Using the SDKs Going Forward

The existing SDKs will remain available for download, but they are now considered historical archives.

* **Use "As Is":** You may continue to use historical copies of the SDKs, but you do so at your own risk. They are provided "as is" without any support or updates from bunq.&#x20;
* **No Guarantee for Future Changes:** We offer no guarantees that the SDKs will continue to function. Future updates to the bunq API may introduce breaking changes that will cause the SDKs to fail without any warning.
* **No Bug Fixes or Security Patches:** The SDKs will no longer receive updates, including critical bug fixes or security patches.

***

#### New `x-bunq-warning` Header

Starting now, every API call made using one of the unmaintained SDKs will receive an `x-bunq-warning` header in the API response.

This header serves as a persistent reminder that you are using a deprecated tool that is no longer supported and may break in the future.

***

#### Our Recommendation: Migrate to the API

For a stable, secure, and future-proof integration, we strongly recommend that all developers build or migrate their applications to use **direct bunq API calls**. This ensures you always have access to the latest features and a supported development path. To get started use one of our tutorials <https://doc.bunq.com/tutorials/your-first-payment>&#x20;

***

#### Formerly Maintained SDKs

The code for the following SDKs remains available as a historical reference.

* [**Java**](https://doc.bunq.com/getting-started/tools/unmaintained-software-development-kits-sdks/java)
* [**PHP**](https://doc.bunq.com/getting-started/tools/unmaintained-software-development-kits-sdks/php)
* [**C#**](https://doc.bunq.com/getting-started/tools/unmaintained-software-development-kits-sdks/c)
* [**Python**](https://doc.bunq.com/getting-started/tools/unmaintained-software-development-kits-sdks/python)