The server defines 5 tools for accessing the Watch Tower Online Library (WOL). All tools have descriptions and visible input schemas with type definitions and parameter descriptions. Naming follows a consistent verb_noun pattern (wol_search, wol_get_*). However, there are significant gaps: (1) No output schemas are documented, responses are free-text formatted strings rather than structured objects, making downstream chaining and validation impossible. (2) Parameters largely lack constraints (e.g., wol_search accepts 'language' as a free string with no format validation or list of supported codes). (3) No pagination support despite returning 'pagination' metadata in search. (4) Error handling is completely absent, no guidance on what happens on invalid inputs, network failures, or malformed URLs. (5) No indication of whether tools are read-only, idempotent, or safe to retry (though all appear to be read-only). (6) Descriptions are adequate (50-200 chars) but generic, they don't explain WHEN to use one tool vs another (e.g., difference between wol_search and wol_browse_publications is unclear). Per-tool scores average to 62.

• Define output schemas for each tool as structured JSON objects. E.g., wol_search should return {results: [{title: string, publication: string, url: string, ...}], pagination: {currentPage: number, totalPages: number, ...}}. Document these in tool descriptions and handler code.
• Add format validation for URL parameters. Use regex pattern in schema (e.g., '^https://wol\.jw\.org/.*') and include format constraint in description.
• Add min/max constraints to numeric parameters in JSON Schema. E.g., {limit: {type: 'number', minimum: 1, maximum: 100}}.
• Create a supported languages enumeration or discovery tool. Replace free-form 'language' string with enum or add a 'get_supported_languages' tool so agents can look up valid codes.
• Add error recovery guidance. E.g., 'If URL is invalid, verify it matches the WOL domain pattern: https://wol.jw.org/en/wol/[type]/r[id]'.
• Add tool annotations. In the tool registration, include {readOnlyHint: true, idempotentHint: true} for all 5 tools to signal safety for retry logic.
• Clarify wol_search vs wol_browse_publications. Describe search as 'free-text keyword search across all content' and browse as 'discovery by publication type/category'. Add examples to descriptions.
• For wol_get_bible_text, validate book/chapter combinations. Add error message: 'Invalid verse: Genesis has 50 chapters, chapter 51 does not exist.' This enables self-correction.
• Consider adding pagination to wol_search results. Current response shows pagination metadata but no offset/page parameters in output schema for chaining to next page.