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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds valuable behavioral details: it is hosted by the platform, requires no platform credentials, uses a prepaid credit system, and clarifies that the client is the data controller under LGPD. This goes well beyond the annotations and gives the agent operational context.

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 run-on sentence with multiple clauses, covering hosting, payment, legal aspects, and data nature. It is informative but not concise; it lacks clear sentence breaks and front-loading of the core purpose. Every clause adds some value, but the structure could be improved for scanning.

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 is simple (one parameter, no output schema), but the description omits essential details like what the input parameter represents and what the output looks like. It does provide context on legality, payment, and data confidentiality, which helps, but without parameter/output guidance, the agent may misapply the tool. Given the lack of output schema, the description should have explained the return format, so it falls short of 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?

The input schema has a single parameter 'inscricao' with no description, and schema description coverage is 0%. The description does not explain what 'inscricao' means (e.g., registration number) or any format expectations. Since the description must compensate for the missing schema documentation, it completely fails to do so for the parameter.

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 states it performs a query ('consulta') on registration records from the Brazilian dental council (CRO-DF). It uses a specific verb+resource construction and the tool is distinct from generic siblings like authenticate or connect, so the purpose is unambiguous.

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 provides context that this is an official public source, non-confidential data, and requires prepaid credits. It does not explicitly say when NOT to use it or name alternative tools, but given the sibling list, it's clear this is the only query tool for such records. It implies usage for official lookup while noting payment requirements.

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