Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

While the annotations confirm it is readOnlyHint: true, the description adds behavioral context by revealing the specific data payload returned (vaccinations, vet, notes, etc.). This helps the agent understand the nature of the call beyond simple status.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The definition is highly concise, providing the purpose and the technical endpoint structure (API path) without unnecessary filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the strong input schema and the inclusion of the full API path and attribute list in the description, the definition is complete enough for an agent to successfully select and invoke the tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Since schema coverage is 100%, a baseline of 3 applies, but the description adds value by detailing the specific set of attributes (breed, weight, codes) that the resulting pet object will contain.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific action ('Get one pet') and defines the resource being retrieved, immediately distinguishing it from list or search siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The usage is strongly implied by the singular 'Get one pet' and the requirement of both a customer and pet ID, but there are no explicit instructions contrasting it with 'moego_list_pets' or other get methods.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.