legalize_countries

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

No annotations are present, so the description must carry the burden of disclosing behavioral traits. It only says 'List supported countries', which implies a read-only operation but does not explicitly state that it is safe, describe the return format, or mention error behavior. The description adds no information beyond what the tool name suggests.

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 sentence with no redundant or extraneous information. It is front-loaded with the action ('List') and the object ('supported countries'), making it concise and efficient.

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?

The tool has no output schema, so the description should explain what the response contains. It only says 'List supported countries' without specifying the format of the list (e.g., strings, objects) or providing any additional context about the data. Given the tool's simplicity, this is a notable gap.

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?

The tool has zero parameters, and the input schema confirms this with no properties. The description does not need to explain parameter semantics because there are none, and the baseline for 0 params is 4.

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 verb ('List') and a specific resource ('supported countries'), clearly stating what the tool does. However, it does not explicitly differentiate from sibling tools like 'legalize_jurisdictions', which could also list legal entities, so it lacks sibling distinction.

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 description gives no explicit guidance on when to use this tool versus alternatives. The verb 'List' implies a simple query operation, but no context about use cases, prerequisites, or exclusions is provided, so usage guidance is only implied rather than stated.

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