The server defines 11 tools with basic schemas and descriptions. Most tools have valid input schemas with typed parameters and descriptions, which is a foundation for quality. However, there are significant gaps: (1) Output schemas are not documented anywhere, LLMs have no way to know what fields are returned or how to chain results. (2) Descriptions vary widely in quality; some are too brief (e.g., 'List all apps in App Store Connect' lacks context on when to use it or what structure is returned). (3) Several parameters lack descriptions or details on constraints and formats. (4) Error handling and recovery guidance are absent, no indication of what can go wrong or how the LLM should respond. (5) Tool annotations (readOnlyHint, destructiveHint) are missing entirely, leaving the LLM unable to distinguish safe from destructive operations at a glance. The server appears to be a straightforward HTTP wrapper around the Apple App Store Connect API, but the tool definitions do not follow LLM-optimized patterns for discovery, composition, and error recovery.

• Document output schemas for all tools. For list_apps, specify: returns {data: [{id: string, attributes: {name: string, bundleId: string, ...}}], meta: {pagination: {...}}}. This enables the LLM to extract app_id values for downstream calls.
• Expand tool descriptions to 80 - 150 characters, including purpose, when to use, and dependencies. Example: 'Get detailed info about a specific app. Call list_apps first to discover app IDs. Returns name, bundle ID, platforms, and primary locale.'
• Add descriptions to all parameters. For date in get_sales_data: 'Date in YYYY-MM-DD format (e.g., 2024-01-15). Defaults to today if omitted.' For locale: 'ISO 639-1 locale code (e.g., en-US, es-ES, fr-FR). Determines which language the localization applies to.'
• Add readOnlyHint: true to all list_* and get_* tools so the LLM knows they are safe to retry. Add destructiveHint: true to create_app_store_version, update_app_store_version_localization, and add_tester_to_beta_group.
• Implement error handling in the tool responses. Instead of returning raw HTTP errors, catch failures and return structured errors like {error: 'app_not_found', message: 'App with ID <id> not found. Use list_apps() to discover valid app IDs.', suggestion: 'call list_apps with a filter or search term'}.
• For tools that may return large result sets (get_customer_reviews, list_apps), document the default limit and add a limit parameter if not present. State: 'Results are limited to 50 items by default. Use limit parameter (1 - 100) to adjust. Returns total_count and next_page_cursor for pagination.'