Senado BR — Brazilian Federal Senate Open Data

Detalhar senador

senado_obter_senador

Read-onlyIdempotent

Retrieve detailed biographical data for a Brazilian senator by their unique code, including name, party, state, and mandates. Use the senator listing tool to find the code.

Instructions

Obtém o detalhe biográfico de um senador específico. Retorna um objeto com codigo, nome, nomeCompleto, nomeCivil, sexo, dataNascimento, naturalidade/ufNaturalidade, partido, uf, foto, email, emExercicio e a lista mandatos (legislatura, uf, participacao, dataInicio, dataFim). emExercicio é derivado dos exercícios do mandato (aberto = em exercício) e vem null — nunca afirmado — quando os mandatos não puderam ser lidos. Código inexistente retorna erro ("Senador com código N não encontrado"), nunca um registro vazio. Requer codigoSenador — obtenha-o via senado_listar_senadores (filtro nome). Para filiações, profissões, licenças, comissões ou cargos use senado_senador_historico (parâmetro tipo).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`codigoSenador`	Yes	Código único do senador no sistema do Senado

Output Schema

TableJSON Schema

Name	Required	Description	Default
`provenance`	Yes
`attribution`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv3.18.4Oct 14, 2026

changedOutput schema / properties / provenance / anyOf

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Changed3 schema fields changedv3.15.2Oct 7, 2026

addedOutput schema / properties / attribution

Added value: +{
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+}

addedOutput schema / properties / provenance

Added value: +{
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+          }
+        },
+        "required": [
+          "source",
+          "source_url",
+          "data_vintage",
+          "retrieved_at",
+          "retrieval",
+          "citation",
+          "license"
+        ],
+        "type": "object"
+      },
+      "minItems": 1,
+      "type": "array"
+    }
+  ]
+}

addedOutput schema / required

Added value: +[
+  "provenance",
+  "attribution"
+]

Changed3 schema fields changedv3.9.0Sep 24, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Changed3 schema fields changedv3.3.3Jul 6, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- addedInput schema / properties / codigoSenador / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +{}
```
First observedv3.3.1Jun 25, 2026

TDQS

A4.7/5.0

Behavior5/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), and the description adds non-obvious behavior on top: nonexistent codes produce an error rather than an empty record, and `emExercicio` is derived and can be null (never asserted) when mandates cannot be read. These are exactly the edge cases an agent needs and they are not recoverable from annotations.

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

Conciseness4/5

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

Dense but front-loaded: purpose first, then semantics, then error behavior, then routing to siblings. It runs long and restates the returned field list, but every sentence carries usable information and nothing is padded.

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

Completeness4/5

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

For a one-parameter read tool with a full output schema, the description supplies prerequisite, error behavior, and null semantics, so nothing an agent needs is missing. Enumerating the return fields is partially redundant against the output schema but does not harm completeness.

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% and the single parameter is fully documented in the schema, so the baseline is 3. The description earns an extra point by explaining how to obtain the value and what a nonexistent value yields, adding operational meaning beyond the schema's field description.

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?

States a specific verb+resource ('Obtém o detalhe biográfico de um senador específico') and enumerates the returned payload. It explicitly contrasts itself with senado_listar_senadores (retrieval of the code) and senado_senador_historico (filiações, profissões, licenças, comissões), so an agent can distinguish it from siblings without opening schemas.

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

Usage Guidelines5/5

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

Names the prerequisite ('Requer codigoSenador') and tells the agent exactly how to satisfy it (via senado_listar_senadores com filtro `nome`), plus a clear when-not: other senator data belongs in senado_senador_historico. Both the entry path and the exclusion are explicit.

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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