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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, so the agent knows this is a safe, non-destructive read. The description adds value by enumerating the return fields (name, city, address, opening hours, timezone, coordinates), which compensates for the absence of an output schema. It does not mention pagination, error behavior, or auth requirements, but given the annotations, a 3 is appropriate.

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?

A single, front-loaded sentence fragment that immediately states the resource and lists return fields without any filler. Every element—the parenthetical clarification, the field enumeration—earns its place.

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?

With no output schema, the description responsibly lists the fields returned, which gives the agent enough to understand what to expect. It omits edge cases like pagination or empty results, but for a simple lookup tool with annotations covering safety, the definition is largely complete.

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 100%, so both parameters (company_id and language) are fully documented in the schema itself. The description adds no parameter syntax or format detail, so the baseline of 3 for high schema coverage holds.

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 clearly identifies the resource as rental offices (pickup/return locations) belonging to a company, and lists the fields returned. It distinguishes itself from the sibling list_rental_companies implicitly by focusing on offices rather than companies, but does not explicitly name the sibling. A specific verb is inferred from the title and name rather than stated in the description.

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?

There is no explicit guidance on when to use this tool versus alternatives, nor any prerequisites or exclusions. The parenthetical '(pickup/return locations)' offers a small contextual hint, but nothing tells the agent when to call list_offices instead of, say, search_availability or ask_company.

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