Description

Three schema classes in mcpgateway/schemas.py are defined but never imported or used by any Python code:

Why it matters

PaginationParams.per_page has le=500 hardcoded. If any future code uses this schema instead of Query(... le=settings.pagination_max_page_size), it would reintroduce the 422 bug that #3469 fixed — operators who raise PAGINATION_MAX_PAGE_SIZE above 500 would silently hit a validation mismatch.

Suggested fix

Delete these three unused schemas. All existing endpoints define their own Query params inline and reference settings.pagination_max_page_size directly.

Verification

# Confirm no Python imports exist
grep -rn 'PaginationParams\|ObservabilityQueryParams\|PerformanceHistoryParams' mcpgateway/ --include='*.py'
# Should only show the class definitions in schemas.py

Related

• Closes nothing (standalone cleanup)
• Discovered during review of ui-pagination-422-response #3641 (fix for [BUG][UI]: Pagination per_page options 200/500 exceed API limit of 100 #3469)