Three tools with basic schemas and descriptions, but significant gaps in parameter documentation and error handling. Tool names follow verb_noun convention (listPets, createPet, getPetById), which is good. However, parameter descriptions are minimal or missing context. The createPet tool has a confusing schema with both flattened properties (name, tag) AND a nested body object, creating ambiguity about which to use. No error handling guidance, no output schema documentation, and no indication of pagination support for listPets despite it accepting a limit parameter.

• Flatten createPet schema: remove the nested 'body' property and keep only top-level name and tag. If a body object is needed for API compatibility, handle it internally in the tool implementation, not in the LLM-facing schema.
• Document output schemas for all three tools. E.g., listPets returns {pets: [{id, name, tag}], total_count}; createPet returns {id, name, tag, created_at}.
• Add pagination to listPets: include offset/limit or cursor parameters, return total_count, and document max result limit (e.g., 'Returns up to 100 pets per call').
• Expand parameter descriptions with constraints and examples. E.g., 'tag: Filter by pet category (e.g., dog, cat, bird). Case-insensitive. Omit to return all pets.'
• Add error handling guidance to tool descriptions. E.g., 'createPet: Returns 409 if a pet with that name already exists. Try getPetById to check first, or use a unique name.'