This server demonstrates solid tool design with well-named, documented tools and proper Zod schemas. All 6 tools follow verb_noun naming conventions (search_nhs, get_condition, get_medicine, get_page, list_conditions, list_medicines). Descriptions are clear and context-rich (averaging ~140 chars), explaining what each tool does and when to use it. Input schemas use Zod with type constraints and descriptions for all parameters. Error handling includes recovery guidance (e.g., 'Did you mean...' suggestions and search fallbacks). However, output schemas are not explicitly documented, the formatters exist but their return structures are not declared in the tool definitions. Parameter descriptions could be more explicit about constraints (e.g., slug format validation). The 'aspect' enum in get_condition is well-designed but only applies to one tool. No tool annotations (readOnlyHint, destructiveHint) are present, though all tools are read-only.

• Document the output schema for all tools. Add a schema declaration to the tool metadata (e.g., via a 'returns' field or in the description) explaining the structure of formatPageWithSections, formatSearchResults, and formatPageList. Specify field names, types, and what they represent so LLMs know what data is available.
• Add tool annotations: mark all tools with readOnlyHint=true to signal they are safe to retry and do not mutate state. This enables clients to optimize execution and safety policies.
• Clarify slug format constraints in get_condition, get_medicine, and get_page. State in the parameter description: 'Lowercase slug with hyphens (e.g., type-2-diabetes). Case-insensitive matching is NOT supported; use search_nhs if you only have a partial or natural-language name.'
• Expand list_conditions and list_medicines descriptions to state: 'Returns a maximum of N conditions/medicines. If you need to browse beyond this limit, use search_nhs with a partial name.' Add a limit parameter (default=50, max=100) to allow pagination and let clients request larger result sets if needed.
• In error responses, include more specific recovery guidance. Instead of 'Use search_nhs or list_conditions first,' consider: 'Condition not found. Try search_nhs(query='asthma') to find the correct slug, then retry with that slug.'
• Add a 'related_slugs' field to search results and error messages. When a slug is not found, return suggestions like 'Did you mean: asthma, eczema, allergic-rhinitis?' so the agent can self-correct without a second search.