Server has 5 tools with basic definitions but significant quality gaps. Tool names follow verb_noun convention (query, get_*, search_*, update_*), which is good. However, descriptions are minimal (10-50 chars), parameter descriptions are sparse or missing, and input schemas lack proper type definitions and constraints. The update_chapter_summary tool exposes an auth_token parameter, violating secret-injection patterns. No output schemas are documented. Error handling is absent from visible code. Only 1 of 5 tools has reasonably complete parameter documentation.

• Remove auth_token from update_chapter_summary parameters. Inject authentication server-side via environment variables or a vault. Document the required permission scope (e.g., 'write:chapters') in the tool description instead.
• Add enums and constraints to all parameters. E.g., search_regex should document regex syntax rules and max pattern length. query should explain supported query syntax and any collection filters.
• Document output schemas for all tools. Specify which fields are returned (e.g., chapter_id, title, summary, key_points for get_chapter_content) and their types. Include pagination info if results can be large.
• Expand tool descriptions to 50-200 characters, explaining WHAT the tool does, WHEN to use it vs. similar tools, and any prerequisites. E.g., 'Search database using regex patterns. Use this for complex pattern matching; use query() for natural language. Returns matching documents with IDs for chaining.'
• Add error handling with recovery hints. E.g., 'If chapter not found, try search_regex() to find similar chapters by title pattern' or 'Invalid regex: ensure pattern is valid PCRE syntax.'

Inferred effective spec: <=2025-11-25.

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