Add a changelog entry for AI metadata extraction (#420)

* Add a changelog entry for AI metadata extraction

* Fix linter issue

* Add content

* Fix naming

* Small review fix

* Improve api extract legal note

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Co-authored-by: Olga Stefaniuk <[email protected]>

.spelling

@@ -302,4 +302,5 @@ box-openapi
 dotnet
 deserialisation
 schemas
-parametrize
+parametrize
+freeform

content/2024/09-17-box-ai-extract.md

@@ -0,0 +1,36 @@
+---
+applied_at: '2024-09-17'
+applies_to:
+  - guides
+  - api
+is_impactful: true
+is_new_feature: true
+release_source_url: ''
+collapse: true
+show_excerpt: true
+---
+
+# Metadata extraction with Box AI Platform API now available in Beta
+
+With its recent addition, Box AI Platform API allows you to extract metadata from the provided input. 
+For example you can extract the financial information from an invoice, or patient data from a medical certificate.
+
+> **Note**: Box AI Platform API is currently a beta feature offered subject to Box’s Main Beta Agreement, and the available capabilities may change. Box AI Platform API is available to all Enterprise Plus customers.
+
+<!-- more -->
+
+You have the following options:
+
+ [`POST /2.0/ai_extract`][1] endpoint allows you to extract metadata from the provided file in a freeform way. 
+ This means you have more freedom in creating the prompt, and the metadata template is not required to run the request.
+ [`POST /2.0/ai_extract_structured`][2] endpoint allows you to extract metadata from the provided file using a [metadata template][3] or `fields` structure.
+
+
+## Where to get support
+
+Should you have any issues or need further guidance, please post a request to our [developer forum][4] for any help needed.
+
+[1]: e://post-ai-extract
+[2]: e://post-ai-extract-structured
+[3]: https://support.box.com/hc/en-us/articles/360044194033-Customizing-Metadata-Templates
+[4]: https://forum.box.com/