Senado BR — Brazilian Federal Senate Open Data

Requerimentos de CPI

senado_requerimentos_cpi

Read-onlyIdempotent

List requerimentos for an active Brazilian Senate CPI by sigla, paginated by page index; count 0 signals page end or upstream empty.

Instructions

Lista requerimentos de uma CPI (Comissão Parlamentar de Inquérito) em atividade, pela siglaCpi, com paginação por pagina (índice baseado em 0, definido pelo upstream). Retorna { siglaCpi, pagina, count, requerimentos }, onde requerimentos é a lista de registros brutos da página (campos conforme a API: tipicamente número, data, ementa, autor e situação do requerimento). count é o tamanho da página; uma página além do total retorna count 0 — use isso para saber que as páginas acabaram. Descubra as siglas via senado_listar_comissoes com tipo=cpi. Limitação conhecida: o endpoint upstream costuma responder vazio mesmo para CPIs em atividade, e não há fonte alternativa limpa na API; nesses casos o retorno traz count 0 e um campo aviso explicando — não interprete lista vazia como certeza de que a CPI não possui requerimentos.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`pagina`	No	Página da lista (padrão: 0)
`siglaCpi`	Yes	Sigla da CPI (ex: CPIVD, CPIPED)

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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-]New value: +[
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+      "data_vintage": {
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+      "derivation_note": {
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+            "retrieved_at"
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+          "type": "object"
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+        "minItems": 1,
+        "type": "array"
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+      "license": {
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+      "notices": {
+        "items": {
+          "type": "string"
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+        "type": "array"
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+      "retrieval": {
+        "anyOf": [
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+]

Changed3 schema fields changedv3.15.2Oct 7, 2026

addedOutput schema / properties / attribution

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedOutput schema / properties / provenance

Added value: +{
+  "anyOf": [
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+        },
+        "data_vintage": {
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+          ]
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+        "field_sources": {
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+            "properties": {
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+              "dataset_id": {
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+                ]
+              },
+              "fields": {
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+              "retrieved_at": {
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+              "served_from_cache": {
+                "type": [
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+                  "null"
+                ]
+              },
+              "source_url": {
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+            },
+            "required": [
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+              "dataset_id",
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+              "retrieved_at"
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+            "type": "object"
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+          "minItems": 1,
+          "type": "array"
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+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "retrieval": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
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+                    "properties": {
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+                        "minimum": 1,
+                        "type": "integer"
+                      },
+                      "kind": {
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+                          "timeout",
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+                          "http_4xx",
+                          "http_5xx",
+                          "rate_limited",
+                          "malformed_body"
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+                    "required": [
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+                "unstable": {
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+      },
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+        "data_vintage",
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+            "type": "array"
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+          "license": {
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+          },
+          "retrieval": {
+            "anyOf": [
+              {
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+                "properties": {
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+                          "minimum": 1,
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+            "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"

Changed3 schema fields changedv3.3.3Jul 6, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- addedInput schema / properties / pagina / maximum
```
Added value: +9007199254740991
```
- 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 already declare readOnly/idempotent/non-destructive, yet the description goes further: 0-based upstream-defined pagination, the shape and meaning of count, and a known upstream limitation where active CPIs can return empty with an aviso field. This last point materially changes how an agent should interpret results and is exactly the kind of behavior annotations cannot express.

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?

Purpose and pagination are front-loaded and the prose is dense with non-redundant guidance. It loses a point because it enumerates the returned record fields (número, data, ementa, autor, situação) even though an output schema exists, so that clause duplicates structured data.

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?

For a two-parameter read tool with an output schema, the description still covers discovery of required input, pagination and termination, response semantics, and a non-obvious upstream failure mode with mitigation. Nothing an agent needs to call or interpret 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?

Schema coverage is 100%, so the baseline is 3. The description still adds meaning by clarifying that pagina is a 0-indexed index defined by the upstream service, which the schema's terse 'Página da lista (padrão: 0)' does not state.

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 opening sentence gives a specific verb (Lista) and resource (requerimentos de uma CPI), scoped by siglaCpi and pagination. It also names the sibling tool that supplies the sigla values, so an agent can place it in the tool graph immediately.

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?

It routes the agent explicitly to senado_listar_comissoes with tipo=cpi to discover siglas, and gives concrete operating guidance for the count=0 case (end of pages vs. empty upstream response). That is when-to-use and how-to-interpret guidance rather than 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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