This server demonstrates solid definition quality with consistent naming patterns, comprehensive parameter schemas, and appropriate tool annotations. All 18 tools follow verb_noun naming conventions (create-, get-, list-, update-). Tool descriptions are present and mostly adequate (median ~120 chars), though some lack strategic context about when to use them vs. related tools. Parameter schemas are well-structured with zod validation, type declarations, and most parameters have descriptions. However, output schemas are not documented, tools return raw JSON stringified API responses without describing the expected fields. Error handling is minimal (unwrapApiResult appears to throw without guidance). The server demonstrates competent foundational work but lacks the polish needed for 80+: descriptions could be more LLM-optimized (currently state WHAT but not always WHEN or WHY), no documented output schemas, and no recovery guidance on errors.

• Add explicit output schema documentation to every tool. Example: 'Returns: {appStoreVersion: {id, versionString, state, platform}, build: {id, version} | null}' This enables agents to plan downstream chains without guessing.
• Enhance error handling with recovery hints. Wrap unwrapApiResult() to add context: 'App ID invalid or not found. Try list-apps(filter.bundleId="your.bundle.id") first to locate the app.' Categorize errors as retryable vs. user-fixable.
• Expand descriptions with dependency hints and usage context. E.g., 'Call list-apps first to find the app ID if you only have the bundle ID. Use get-app for detailed metadata; use list-apps to search by name/SKU/bundle.' Target 80-150 chars.
• Document pagination behavior in list tool descriptions: 'Returns up to limit items (default 50, max 200). Check the response for total count or next_cursor to fetch additional pages.' Mention result limits to set LLM expectations.
• Add idempotency documentation to write tools. State: 'Calling this tool multiple times with the same inputs produces the same result (idempotent)' or 'WARNING: Each call creates a new version. Retrying may duplicate.' This guides agent retry logic.
• Consider adding a dry-run or preview mode for destructive operations (create-app-store-version, update-*). Or add confirmation logic: 'This will create a new version. Call confirm-app-store-version(id, confirmed=true) to finalize.' Prevents accidental submissions.
• Return only essential fields in responses. Strip audit metadata, timestamps, and internal pointers. Keep response tokens lean so agents can reason about results without bloat.