# Developers

**Perform your first API call**: This section introduces developers to the basics of Altum AI's API, including initial setup and authentication processes. It's the perfect starting point for new users of the platform.

{% content-ref url="developers/setting-up-an-api-call" %}
[setting-up-an-api-call](https://docs.altum.ai/english/developers/setting-up-an-api-call)
{% endcontent-ref %}

**Credit API**: Focuses on the specifics of the Credit API, detailing how to access and use this particular service for credit-related functionalities.

{% content-ref url="developers/credit-api" %}
[credit-api](https://docs.altum.ai/english/developers/credit-api)
{% endcontent-ref %}

**Sandbox Environment**: Explains the Sandbox environment provided by Altum AI, which allows developers to test and experiment with the APIs in a controlled setting.

{% content-ref url="developers/sandbox" %}
[sandbox](https://docs.altum.ai/english/developers/sandbox)
{% endcontent-ref %}

**OpenAPI Specification**: Provides information on the OpenAPI specifications for Altum AI's services, enabling developers to understand and interact with the APIs more effectively.

{% content-ref url="developers/openapi-specifications" %}
[openapi-specifications](https://docs.altum.ai/english/developers/openapi-specifications)
{% endcontent-ref %}

**Postman API Collection:** Test all APIs directly in Postman, validate your requests, and easily generate sample code for Dutch real estate data.

{% content-ref url="developers/postman-api-collection" %}
[postman-api-collection](https://docs.altum.ai/english/developers/postman-api-collection)
{% endcontent-ref %}

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**API Status**: This part offers insights into the real-time status and health of the APIs, ensuring developers are informed about any downtimes or maintenance activities.

{% content-ref url="developers/get-api-status" %}
[get-api-status](https://docs.altum.ai/english/developers/get-api-status)
{% endcontent-ref %}