Add unit tests for api

**Feature request**
It would be great to have monitoring for types.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_monitoring` with default `false`.

The issue names an API and the `enable_monitoring` configuration option, but no files or test entry points. First locate the API configuration handling and existing unit-test layout, then clarify what type monitoring should cover. Done should include tests for the option's default and enabled behavior, with an agreed production-monitoring expectation.

Written by the indexing model from the issue text.