Senado BR — Brazilian Federal Senate Open Data

Orientação de bancada

senado_orientacao_bancada

Read-onlyIdempotent

Retrieve party leadership voting instructions for Senate floor votes to analyze party discipline. Input a date or period to get each party's orientation and vote tallies.

Instructions

Orientação de bancada nas votações de plenário: como cada liderança partidária orientou o voto, com placar — essencial para análise de disciplina partidária. Retorna { count, votacoes }, com cada votação trazendo codigoVotacaoSve, descricao, materia, dataInicio, dataTermino, sessao, totais (totalSim, totalNao, totalAbstencao, obstrucoes), quorumInicial/quorumFinal e orientacoes (partido, voto). Informe data (um dia) ou o período dataInicio/dataFim. O codigoVotacaoSve é o identificador interno do sistema de votação eletrônica e pertence a um espaço de numeração próprio: NÃO serve como entrada de senado_obter_votacao (use a data com senado_search_votacoes para chegar ao código da votação). Para o resultado das sessões use senado_resultado_plenario.

Input Schema

TableJSON Schema

Name	Required	Description
`data`	No	Data da sessão (YYYYMMDD)
`dataFim`	No	Data fim do período (YYYYMMDD)
`dataInicio`	No	Data início do período (YYYYMMDD)

Output Schema

TableJSON Schema

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

Schema Changelog

Changes observed during successful MCP inspections.

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+          },
+          "retrieved_at": {
+            "type": "string"
+          },
+          "source": {
+            "type": "string"
+          },
+          "source_url": {
+            "type": "string"
+          }
+        },
+        "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"

Changed2 schema fields changedv3.3.3Jul 6, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +{}
```
First observedv3.3.1Jun 25, 2026

TDQS

A4.5/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered. The description adds a genuinely useful behavioral trait — that codigoVotacaoSve lives in its own numbering space and cannot be reused as input elsewhere — plus input-format guidance. Return-field enumeration is largely redundant given the output 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-loads purpose and routing in dense, purposeful sentences. However, the long enumeration of return fields is partly wasted since an output schema already exists, adding length without new value. Efficient overall but not maximally lean.

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?

Given a complex, differently-numbered identifier and multiple similar siblings, the description supplies the routing, the input pattern and the code-space caveat an agent needs. It over-explains return values that the output schema already carries, so it is complete if slightly redundant rather than tight.

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%, so baseline is 3. The description goes beyond the bare (YYYYMMDD) schema notes by clarifying data is a single day and that the alternative is the dataInicio/dataFim period, i.e. the either/or usage pattern. It adds real semantic meaning over the schema.

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: how each party leadership guided the vote in plenary, with the scoreboard. It also explicitly distinguishes itself from siblings, naming senado_obter_votacao and senado_resultado_plenario. An agent can select this tool without opening any 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?

Gives the use case (party discipline analysis) and names both alternatives: use senado_resultado_plenario for session results, and use data with senado_search_votacoes to reach a voting code. It also states a when-not (codigoVotacaoSve is not a valid input for senado_obter_votacao). Explicit routing with exclusions.

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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