Amazon CodeCatalyst is no longer open to new customers. Existing customers can continue to use the service as normal. For more information, see [How to migrate from CodeCatalyst](migration.md).

# Python compatibility
<a name="packages-python-compatibility"></a>

 While CodeCatalyst does not support the `/simple/` API, it does support the `Legacy` API operations. CodeCatalyst does not support PyPI's `XML-RPC` or `JSON` API operations. 

For more information, see the following on the Python Packaging Authority's GitHub repository.
+ [Legacy API](https://warehouse.pypa.io/api-reference/legacy.html)
+ [XML-RPC API](https://github.com/pypi/warehouse/blob/main/docs/dev/api-reference/xml-rpc.rst)
+ [JSON API](https://docs.pypi.org/api/json/)

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Amazon CodeCatalyst. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query codecatalyst` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).