Single tool 'execute_skill_action' has critical definition gaps. Description is present (89 chars) but vague, does not explain WHAT skill operations are supported, WHEN to use this tool, or what the output structure contains. Input schema exists but is minimal: single string parameter 'query_payload' with no format constraints, length limits, or examples. No output schema documented, responses are opaque JSON blobs. Tool name uses generic verb 'execute' rather than domain-specific action (e.g., 'plan_curbside_pickup_route'). No error handling guidance. No parameter validation rules. Composition is poor: tool wraps an entire skill system behind a single string parameter, forcing the LLM to guess the payload format.

• Rename tool to 'plan_curbside_pickup_route' to match the actual domain action and help LLMs infer intent from the name alone.
• Replace 'query_payload' string parameter with explicit, typed parameters: buyer_latitude (number, -90 to 90), buyer_longitude (number, -180 to 180), item_sku (string, pattern: ^[A-Z0-9-]+$), max_drive_distance_miles (number, 1-100). Each parameter must have a description.
• Document the output schema explicitly: pickup_plan_id (string), target_item_sku (string), nearest_store_name (string), in_stock_quantity (integer), drive_time_minutes (integer), curbside_ready_window (enum: READY_IN_15_MINUTES|READY_IN_30_MINUTES|READY_IN_45_MINUTES|READY_IN_60_MINUTES), route_map_url (string, format: uri).
• Expand tool description to 150-200 chars: 'Plan a curbside pickup route for a specific item at the nearest store within the buyer's drive distance. Returns store location, stock availability, estimated pickup time, and navigation URL. Use this when a buyer wants to pick up an item locally instead of shipping.'
• Add error handling: document what happens if item is out of stock, no stores within range, or invalid coordinates. Return structured errors with recovery guidance (e.g., 'Item DRILL-SET-20V not in stock within 10 miles. Nearest store with stock: 15 miles away. Expand search radius?').