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

Annotations already mark the tool as read-only and idempotent. The description adds meaningful context beyond that: prepaid billing per query, non-confidential data classification, and the client's data-controller responsibility under LGPD. No contradiction with annotations, though the role of login/cert parameters remains ambiguous.

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 concise four-sentence paragraph that front-loads the essential purpose. Each sentence adds value, covering source, hosting, billing, data classification, and legal responsibility; a little restructuring could improve scannability, but overall length and density are reasonable.

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?

Despite adding important source, billing, and legal context, the tool has 7 parameters, no output schema, and no parameter guidance. An agent cannot infer which identifier is required, whether authentication credentials are needed, or what the return value looks like, leaving a significant completeness gap for real invocation.

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 schema has 7 parameters with 0% description coverage, and the description does not explain any of them. It never clarifies the roles of ie, cpf, cnpj, login fields, or pkcs12 parameters, nor hints at valid combinations, so the agent receives no semantic guidance for constructing a call.

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?

Description opens with 'SINTEGRA: PE, consulta em fonte oficial' and clarifies it queries information from official Brazilian sources, giving a specific verb and resource scope. It is distinguishable from generic siblings like authenticate and connect, though it could more explicitly state the exact SINTEGRA registration data returned.

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?

Provides useful operational context: hosted by the platform, no platform credentials required, prepaid credit per query, and LGPD compliance obligations. This implies when it is appropriate to use and differentiates it from authentication-oriented siblings, but it does not name explicit alternative tools or state when-not-to-use conditions.

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