Four tools with complete schemas and descriptions. Naming follows verb_noun pattern (search_*, get_*, list_*). Descriptions are adequate (50-100 chars) but lack WHEN-to-use guidance and dependency hints. Parameters have types and descriptions, but lack enums for constrained values (e.g., media_type in search_items). Output schemas are documented in separate files but not visible in the provided source. Error handling and recovery guidance are absent. Tool composition is sound, each does one thing. No security issues detected (read-only, no secrets). Baseline: avg tool description ~75 chars (below 194-char production median); all params described but no enums used.

• Add WHEN-to-use guidance to each tool description. E.g., 'Use search_newspapers to find text printed on newspaper pages; use search_items to find works by title/creator/subject. search_items requires a media_type; call list_collections first to discover available types.'
• Convert media_type parameter to an enum. Query the Library of Congress API at startup to populate valid values, or hardcode known types (books, maps, photographs, manuscripts, etc.) and document them.
• Add min/max constraints to pagination parameters. E.g., 'page: integer, minimum 1, maximum 1000' and 'limit: integer, minimum 1, maximum 100'.
• Include error recovery hints in tool descriptions. E.g., 'If no results, try a broader query or use a different tool. If identifier not found, call search_items to locate the item first.'
• Document output schemas explicitly in tool descriptions or a separate schema file. Verify that search_items returns an 'identifier' field that get_item accepts, and that all tools return pagination metadata (total_count, next_page) for chaining.

Inferred effective spec: 2025-06-18+.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry