Shepdog exhibits severe definition quality gaps across all 8 tools. Most tool descriptions are present but lack actionable detail for LLM selection. Schemas are visible but incomplete: parameters lack type constraints (no enums for status fields, no min/max for numeric values). Critical issue: inventory_query explicitly documents a broken parameter (sku always returns empty), yet the parameter remains in the schema, this violates the constraint-input pattern and invites LLM misuse. Email tools (draft_email, send_email, delivery_status) form a chain but lack chaining IDs in responses. Room booking tools expose financial conditions but lack confirmation-request pattern implementation. No tool includes error recovery guidance. Naming is generally clear (verb_noun), but descriptions average ~80 chars, below the 194-char baseline for A+ tools.

• Remove 'sku' parameter from inventory_query entirely, or fix the backend to support it. Document that only 'product_id' is valid. Add enum or pattern constraint to product_id (e.g., 'SKU-\d{4}').
• Add explicit chaining IDs to email tool responses: draft_email must return draft_id; send_email must return message_id and reference the draft_id it consumed. Document the sequence in each tool description.
• Expand tool descriptions to 100 - 200 chars. Include WHEN to call each tool and WHAT happens next. E.g., 'Confirm a room booking and pay the $25 fee. Call this only after book_room returns requires_confirmation=true. Returns booking_id for check-in.'
• Add enums to status/day/priority fields: day ∈ {Monday, Tuesday, ..., Sunday}; status ∈ {pending, confirmed, cancelled}. Add min/max to fee_amount (e.g., 0 - 1000 USD).
• Add error recovery guidance to each tool description: 'If the booking fails with status=unavailable, try a different day. If fee_accepted=false, the booking is not confirmed, call confirm_booking again.'