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

With no annotations, the description carries the full burden and does disclose auth behavior ('Uses the session/`token` DMCA API token') and a precondition on siteId. It still omits what the call actually produces (e.g. a new case id), any side effects on existing cases, and error conditions for a feature-disabled site.

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?

It is three short fragments with no padding, and the endpoint and purpose are front-loaded. The telegraphic style reads as under-written rather than wasteful, so it is efficient but not polished prose.

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?

For a 10-parameter mutation tool with no annotations and no output schema, the description covers purpose, auth, and one precondition, but says nothing about the return value (such as a case id) or failure modes. It is minimally adequate rather than 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 all ten parameters are already documented and the baseline is 3. The description only re-adds the siteId precondition, adding no syntax, format, or constraint detail beyond the schema.

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 states a specific verb and resource ('create compliance case') plus the concrete HTTP endpoint, and the 'compliance' qualifier implicitly separates it from the sibling createCase/createDIYCase and pairs with listComplianceCases. It stops short of explicitly contrasting with those siblings, so it is clear but not fully differentiated.

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?

It gives a real prerequisite ('site owner must have feature enabled') and notes the token may come from the session, which is useful usage context. However, it never states when to choose this tool over createCase or createDIYCase, leaving the sibling routing to inference.

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