AgentPack Gateway demonstrates basic tool structure but falls short of production quality. All 8 tools have descriptions and input schemas with type definitions, but descriptions are minimal (10-80 chars, well below the 194-char baseline) and lack context for LLM selection. Parameter descriptions are present but terse. No output schemas documented. Error handling is absent, tools return JSON strings without guidance on failure modes or recovery. Tool naming follows verb_noun convention (geocode, reverse_geocode, get_weather) but lacks specificity about dependencies and prerequisites. The gateway tools (list_servers, server_health) are READ_ONLY but lack explicit annotations. No evidence of idempotency guarantees, rate limiting, or pagination for list operations.

• Expand all tool descriptions to 100-200 chars. Include: what it does, when to use it, what it returns, and any prerequisites. Example: 'Geocode an address to lat/lng coordinates. Use before get_weather or plan_trip. Returns {address, lat, lng} or error if not found.'
• Document output schemas for all tools. Specify returned fields, types, and which fields are safe to pass to downstream tools. Example: geocode returns {address: string, lat: number, lng: number, error?: string}.
• Add error handling guidance to descriptions. Example: 'If address not found, returns error field. Call search_locations() with partial name to discover valid addresses.'
• Add readOnlyHint: true to all tools (all are READ_ONLY per Risk column). This enables agents to reason about safe retry and composition.
• Formalize tool dependencies in parameter descriptions. Example: plan_trip description should state 'Requires geocoding-mcp for coordinates and weather-mcp for forecast data.'