Server has 7 tools with complete schemas and descriptions. Naming follows verb_noun convention (list_, query_, get_, submit_, delete_, inspect_). Descriptions are present and adequate (100-200 chars typical). However, output schemas are not documented, LLMs cannot predict response structure. Error handling returns generic error text without recovery guidance. Parameters lack validation constraints (e.g., date format not enforced, rowLimit lacks min/max). No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels. Composition is sound, tools are single-responsibility and chainable.

• Document output schemas for all tools. Example: 'Returns {sites: [{name: string, siteUrl: string, permissionLevel: string}], totalCount: number}'. This enables LLMs to extract and chain data.
• Add tool annotations via inputSchema.toolAnnotations: {readOnlyHint: true} for list_sites, query_search_analytics, list_sitemaps, get_sitemap, inspect_url; {destructiveHint: true} for delete_sitemap; {writeHint: true} for submit_sitemap.
• Enhance error handling: return structured errors with category (retryable|user_fixable|fatal) and recovery hint. Example: {isError: true, category: 'user_fixable', message: 'Invalid siteUrl format. Must be https://example.com/ or sc-domain:example.com', suggestion: 'Call list_sites() to see valid site URLs.'}
• Add format validation to date parameters. Validate startDate/endDate match YYYY-MM-DD regex before calling API. Return: 'Invalid startDate: got "2024-1-5", expected YYYY-MM-DD format (e.g., 2024-01-05)'.
• Add pagination to list_sites and list_sitemaps. Accept optional limit (default 20, max 100) and offset parameters. Return {items: [...], total: number, hasMore: boolean} to guide agent iteration.