Add rate limiting for monitoring

**Problem**
When working with middleware, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

The issue names no files, tests, or entry points. Clarify whether the work is monitoring rate limiting or middleware error messages, then identify the affected entry point and a test before implementation; done should be defined against that clarified behavior.

Written by the indexing model from the issue text.