Senado BR — Brazilian Federal Senate Open Data

Agenda do plenário

senado_agenda_plenario

Read-onlyIdempotent

Retrieves the agenda of Brazilian Federal Senate or National Congress plenary sessions by day or month, showing the matters to be voted on. Use it to check upcoming sessions and their voting agenda.

Instructions

Obtém a agenda de sessões de plenário (Senado ou Congresso Nacional), por dia ou mês, com a pauta de matérias a votar. Retorna { data, escopo, count, sessoes }, onde cada sessão traz codigo, data, hora, tipo, situacao e pauta (matéria, ementa, autor, parecer). Use escopo dia/mes/cn; sem data assume hoje. Para o resultado já apreciado use senado_resultado_plenario; detalhes de uma sessão via senado_encontro_plenario.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`data`	No	Data específica (YYYYMMDD; padrão: hoje)
`escopo`	No	dia = SF+CN no dia; mes = mês inteiro; cn = plenário do Congresso	dia
`dataFim`	No	Data fim para período do CN (YYYYMMDD; apenas escopo=cn)

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

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+          "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

A4.4/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so safety is covered. The description adds genuine behavioral context beyond that: the default when data is omitted ("sem data assume hoje") and the day/month scope semantics. It does not add auth or rate-limit details.

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 defaults and routing, all in a compact block. Slightly penalized because the enumerated return shape (data, escopo, count, sessoes, etc.) largely repeats what the output schema already declares.

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?

An output schema exists, so the description needn't explain returns further, and it covers the remaining gaps an agent needs: purpose, default behavior, scope enum, and sibling routing. Complete for a read-only agenda lookup.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents data (pattern YYYYMMDD, default hoje), escopo (dia/mes/cn semantics) and dataFim. The description restates the escopo values and the no-data default but adds no syntax or format detail beyond the schema. Baseline 3 is appropriate.

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 ("Obtém") plus resource ("agenda de sessões de plenário"), its scope (Senado ou Congresso Nacional), and granularity (por dia ou mês). It distinguishes itself from siblings by naming senado_resultado_plenario as the tool for already-deliberated items.

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 escopo dia/mes/cn, omit data to default to today, use senado_resultado_plenario for past results, and senado_encontro_plenario for session detail. Both when-to-use and alternatives are named, leaving nothing to inference.

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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