Update services documentation

**Description**
Currently handlers lacks proper filtering support.

**Proposed solution**
Add configurable filtering with sensible defaults.

**Priority**: Low/Medium

The issue names no files, tests, or entry points. Start by locating the service handlers and their configuration paths, then determine the expected filtering behavior and sensible defaults; done means handlers support configurable filtering and the relevant checks pass.

Written by the indexing model from the issue text.