The server provides 10 well-intentioned read-only tools for accessing classic books across multiple sources (Gutenberg, Wikisource, OpenLibrary, LibriVox, Aozora Bunko, Sacred Texts). Tool names follow verb_noun conventions consistently (search*, get*). Descriptions are present and reasonably detailed (100-200 chars typically), exceeding baseline minimums. Input schemas are explicitly defined with types and descriptions. However, output schemas are NOT documented, callers cannot see what structure to expect from responses. Parameter descriptions lack formal constraints (enums, ranges, patterns). Error handling is present in code but not surfaced in tool definitions. The server appears to be a Cloudflare Worker with HTTP transport, which is positive for Protocol Readiness, but lack of documented output schemas and output validation against the 'include-chaining-ids' and 'strip-api-responses' patterns are significant gaps for agent composition.

• Add formal output schemas to all tool definitions. Specify response field names, types, and meanings. Example: 'Returns an array of objects with fields: {id (string), title (string), authors (string), language (string), subjects (array of string)}'.
• Convert language code descriptions to enums. Instead of listing 'en, zh, fr, de, es, pt, ru, ar, la, el, ja, ko' in prose, declare an enum constraint so LLMs know only those values are valid.
• Document pagination support. For search tools, add fields: next_cursor (optional string for pagination), total (integer), limit (integer used). If pagination is not supported, explicitly state 'Results are not paginated; use limit to reduce results.'
• Expand getDailyPoem description. Clarify what fields the response contains (e.g., poem text, author, language), what language the poem is in, and whether it changes daily or returns the same poem.
• Add error handling guidance to tool descriptions. State which errors are transient (retry-safe) and which are fatal. Example: 'If the API is blocked or returns a 403, the agent should inform the user. If the request times out, it may be retried.'
• Document the structure returned by get* tools (getWikisourcePage, getWikisourceZhByTitle, getAozoraText). Specify that responses include {title, pageid/book_id, content} and whether content is paginated or truncated.
• Add length limits to numeric parameters. For example, limit parameters should have constraints like 'limit: 1 - 100 (default 5)' to prevent agents from requesting unreasonable result counts.