Place an order for a pet.

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

The description does not disclose any behavioral traits beyond the basic action. With only openWorldHint annotation, the agent has no information about side effects, permissions, or order lifecycle. The description fails to add value beyond the annotation.

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 description is a single, concise sentence. It is front-loaded and efficient, but it lacks structure such as parameter breakdown or usage hints. It is not overly verbose, but could be expanded slightly for clarity.

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 complexity (6 parameters, no required, no output schema), the description is severely incomplete. An agent cannot understand how to properly form an order request without additional information about parameter relationships or expected outcomes.

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?

Schema description coverage is only 17% (only status has a description). The tool description does not elaborate on any parameter meaning, leaving the agent to rely solely on parameter names (id, petId, quantity, etc.), which may be ambiguous.

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 'Place a new order in the store.' clearly indicates the action (place) and resource (order). The title adds specificity ('for a pet'), distinguishing it from other pet-related operations. However, it lacks detail on what constitutes an order, but it is not misleading.

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?

No guidance is provided on when to use this tool versus alternatives like get_order_by_id or delete_order. No prerequisites (e.g., existing pet or user) or context are mentioned, leaving the agent to infer usage.

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