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DeHor-Labs

mcp-fiscal-brasil

by DeHor-Labs

consultar_cep

Retrieve the full Brazilian address for any CEP postal code, including street, neighborhood, city, state, and source service.

Instructions

Consulta o endereço completo a partir de um CEP brasileiro. Retorna logradouro, bairro, cidade, estado e serviço de origem. Aceita CEP com ou sem hífen (ex: '01001-000' ou '01001000').

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cepYesCEP com 8 digitos, com ou sem hifen (ex: '01001-000' ou '01001000').

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

No annotations are provided, so the description carries the full burden. It clearly discloses that the tool returns address components (logradouro, bairro, cidade, estado, serviço de origem) and is a read-only query, with no mention of destructive actions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two concise sentences, containing all essential information with no unnecessary words. Every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (one parameter, clear output schema hinted at), the description sufficiently covers the purpose, input format, and output fields. No further details are needed for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% for the single parameter 'cep', and the description adds value by clarifying accepted formats (with or without hyphen) and providing examples, which the schema does not fully convey.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Consulta' and the resource 'endereço completo a partir de um CEP brasileiro'. It distinguishes from siblings focused on other Brazilian data like fiscal or tax entities.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides input format details (with or without hyphen) but does not explicitly state when to use this tool versus alternatives. Context with sibling tools implies use for CEP lookup, but explicit guidance is missing.

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

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