Senado BR — Brazilian Federal Senate Open Data

Senadores afastados

senado_senadores_afastados

Read-onlyIdempotent

Retrieve Brazilian Federal Senators currently out of office, including code, name, party, state, photo, and active status. Use their code to look up full details.

Instructions

Lista os senadores atualmente afastados (fora de exercício). Retorna { count, senadores }, cada item com codigo, nome, nomeCompleto, partido, uf, foto e emExercicio (sempre false). Não requer parâmetros. Atenção: é a lista BRUTA do upstream, sem recorte de legislatura — pode conter registros históricos (ex.: senadores falecidos) e inconsistências pontuais com o detalhe do parlamentar; também não traz o vínculo titular↔suplente (para saber quem assumiu a vaga, consulte os mandatos em senado_obter_senador). Use codigo em senado_obter_senador para o detalhe; para os senadores em exercício (e busca por nome) use senado_listar_senadores.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

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

Previous value: -[
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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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+          "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"

Changed1 schema field changedv3.3.3Jul 6, 2026
- changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +{}
```
First observedv3.3.1Jun 25, 2026

TDQS

A4.8/5.0

Behavior5/5

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

Annotations cover the safety profile (readOnly, idempotent, non-destructive), but the description adds genuinely important caveats beyond them: raw upstream data, possible historical/deceased records, inconsistencies with the parliamentarian detail, and the missing titular↔suplente linkage. This is behavior an agent could not infer from annotations or schema.

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?

Front-loaded with the core purpose, then return shape, then caveats and routing. Every sentence carries information, though the caveat sentence is dense; still efficient and well-ordered.

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 a zero-param read tool with an output schema, the description still usefully documents the return shape (`{ count, senadores }` and fields) and fully covers limitations and sibling routing. Nothing needed to call it correctly is missing.

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?

Zero parameters, so baseline is 4. The description confirms 'Não requer parâmetros', which is consistent with the empty schema and leaves nothing ambiguous.

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 ('Lista os senadores atualmente afastados') and immediately distinguishes itself from siblings by naming senado_listar_senadores (in-office senators) and senado_obter_senador (detail). An agent can identify the tool's scope without opening the schema.

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?

Explicitly routes the agent: use `codigo` in senado_obter_senador for detail, and use senado_listar_senadores for in-office senators and name search. It also flags when NOT to rely on this list (no titular↔suplente link, no legislature filter).

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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