Dados Abertos Senado BR MCP

Pesquisar votações

senado_search_votacoes

Read-onlyIdempotent

Busca e lista votações do plenário combinando critérios opcionais. Janela temporal: informe dias (últimos N dias, 1-365) para atividade recente, OU dataInicio/dataFim (YYYYMMDD) para um período arbitrário — para um ano inteiro use dataInicio: "AAAA0101" e dataFim: "AAAA1231". Demais filtros: idProcesso, codigoMateria, sigla/numero/ano da matéria, codigoParlamentar e siglaVotoParlamentar. Retorna { count, votacoes } ordenadas da mais recente para a mais antiga; cada item traz codigoSessao, data, materia, codigoMateria, resultado e placar (totalSim/totalNao/totalAbstencao), sem votos nominais. Use senado_obter_votacao com o codigoSessao para os votos de cada senador.

Input Schema

Name	Required	Description
`ano`	No	Ano da matéria
`dias`	No	Janela: votações dos últimos N dias (ignorado se dataInicio/dataFim forem informados)
`sigla`	No	Sigla do tipo de matéria
`numero`	No	Número da matéria
`dataFim`	No	Data fim (YYYYMMDD)
`dataInicio`	No	Data início (YYYYMMDD)
`idProcesso`	No	ID do processo legislativo
`codigoMateria`	No	Código da matéria
`codigoParlamentar`	No	Código do parlamentar
`siglaVotoParlamentar`	No	Tipo de voto do parlamentar

Output Schema

Name	Required	Description	Default
`provenance`	Yes	Bloco de proveniência do portfólio (projeção concise): source, source_url, data_vintage, retrieved_at (horário de Brasília), citation, license, revision e retrieval; field_sources só quando a resposta funde recortes, derived e derivation_note só nos modos de estatísticas. retrieval é o diagnóstico da ida à origem nesta chamada — requisições, tentativas com retentativas, anomalias superadas (timeout, network, rate_limited, http_5xx, http_4xx, malformed_body) e unstable (true quando algo precisou ser repetido) —, ou null quando não foi medido. Lista de blocos quando a chamada consulta várias fontes (índice do search).
`attribution`	Yes	URLs de origem dos dados (as source_url distintas dos blocos de proveniência, incluindo as de field_sources), para linkar a citação

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 28, 2026

addedOutput schema / properties / attribution / description

Added value: +"URLs de origem dos dados (as source_url distintas dos blocos de proveniência, incluindo as de field_sources), para linkar a citação"

addedOutput schema / properties / provenance / description

Added value: +"Bloco de proveniência do portfólio (projeção concise): source, source_url, data_vintage, retrieved_at (horário de Brasília), citation, license, revision e retrieval; field_sources só quando a resposta funde recortes, derived e derivation_note só nos modos de estatísticas. retrieval é o diagnóstico da ida à origem nesta chamada — requisições, tentativas com retentativas, anomalias superadas (timeout, network, rate_limited, http_5xx, http_4xx, malformed_body) e unstable (true quando algo precisou ser repetido) —, ou null quando não foi medido. Lista de blocos quando a chamada consulta várias fontes (índice do search)."

Changed1 schema field changedOct 8, 2026

changedOutput schema / properties / provenance / anyOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "citation": {
-        "type": "string"
-      },
-      "data_vintage": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "field_sources": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "data_vintage": {
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "dataset_id": {
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "fields": {
-              "items": {
-                "type": "string"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "retrieved_at": {
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "served_from_cache": {
-              "type": [
-                "boolean",
-                "null"
-              ]
-            },
-            "source_url": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "fields",
-            "source_url",
-            "dataset_id",
-            "data_vintage",
-            "retrieved_at"
-          ],
-          "type": "object"
-        },
-        "minItems": 1,
-        "type": "array"
-      },
-      "license": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "retrieval": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "anomalies": {
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-                  "additionalProperties": false,
-                  "properties": {
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-                      "minimum": 1,
-                      "type": "integer"
-                    },
-                    "kind": {
-                      "enum": [
-                        "timeout",
-                        "network",
-                        "http_4xx",
-                        "http_5xx",
-                        "rate_limited",
-                        "malformed_body"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "count"
-                  ],
-                  "type": "object"
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-                "type": "array"
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-                "type": "integer"
-              },
-              "requests": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "unstable": {
-                "type": "boolean"
-              }
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-            "required": [
-              "requests",
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-              "anomalies",
-              "unstable"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "retrieved_at": {
-        "type": "string"
-      },
-      "source": {
-        "type": "string"
-      },
-      "source_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "source",
-      "source_url",
-      "data_vintage",
-      "retrieved_at",
-      "retrieval",
-      "citation",
-      "license"
-    ],
-    "type": "object"
-  },
-  {
-    "items": {
-      "additionalProperties": false,
-      "properties": {
-        "citation": {
-          "type": "string"
-        },
-        "data_vintage": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "field_sources": {
-          "items": {
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-            "properties": {
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-                "type": [
-                  "string",
-                  "null"
-                ]
-              },
-              "dataset_id": {
-                "type": [
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-                  "null"
-                ]
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-              "retrieved_at": {
-                "type": [
-                  "string",
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-              },
-              "served_from_cache": {
-                "type": [
-                  "boolean",
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-              "source_url": {
-                "type": "string"
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-              "retrieved_at"
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-            "type": "object"
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-          "type": "array"
-        },
-        "license": {
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-            "null"
-          ]
-        },
-        "retrieval": {
-          "anyOf": [
-            {
-              "additionalProperties": false,
-              "properties": {
-                "anomalies": {
-                  "items": {
-                    "additionalProperties": false,
-                    "properties": {
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-                        "minimum": 1,
-                        "type": "integer"
-                      },
-                      "kind": {
-                        "enum": [
-                          "timeout",
-                          "network",
-                          "http_4xx",
-                          "http_5xx",
-                          "rate_limited",
-                          "malformed_body"
-                        ],
-                        "type": "string"
-                      }
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-                      "kind",
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-                  "minimum": 1,
-                  "type": "integer"
-                },
-                "unstable": {
-                  "type": "boolean"
-                }
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-              "required": [
-                "requests",
-                "attempts",
-                "anomalies",
-                "unstable"
-              ],
-              "type": "object"
-            },
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-              "type": "null"
-            }
-          ]
-        },
-        "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"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "citation": {
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "derivation_note": {
+        "type": "string"
+      },
+      "derived": {
+        "type": "boolean"
+      },
+      "field_sources": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "data_vintage": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "dataset_id": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "fields": {
+              "items": {
+                "type": "string"
+              },
+              "minItems": 1,
+              "type": "array"
+            },
+            "retrieved_at": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "served_from_cache": {
+              "type": [
+                "boolean",
+                "null"
+              ]
+            },
+            "source_url": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "fields",
+            "source_url",
+            "dataset_id",
+            "data_vintage",
+            "retrieved_at"
+          ],
+          "type": "object"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "license": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "notices": {
+        "items": {
+          "type": "string"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
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+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
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+                "type": "array"
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+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "revision": {
+        "additionalProperties": false,
+        "properties": {
+          "note": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "status": {
+            "enum": [
+              "current",
+              "provisional",
+              "final"
+            ],
+            "type": "string"
+          }
+        },
+        "required": [
+          "status",
+          "note"
+        ],
+        "type": "object"
+      },
+      "source": {
+        "type": "string"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
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+      "source_url",
+      "data_vintage",
+      "retrieved_at",
+      "retrieval",
+      "citation",
+      "license"
+    ],
+    "type": "object"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "citation": {
+          "type": "string"
+        },
+        "data_vintage": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "derivation_note": {
+          "type": "string"
+        },
+        "derived": {
+          "type": "boolean"
+        },
+        "field_sources": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "data_vintage": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "dataset_id": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "fields": {
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1,
+                "type": "array"
+              },
+              "retrieved_at": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "served_from_cache": {
+                "type": [
+                  "boolean",
+                  "null"
+                ]
+              },
+              "source_url": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "fields",
+              "source_url",
+              "dataset_id",
+              "data_vintage",
+              "retrieved_at"
+            ],
+            "type": "object"
+          },
+          "minItems": 1,
+          "type": "array"
+        },
+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "notices": {
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "type": "array"
+        },
+        "retrieval": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "anomalies": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "count": {
+                        "maximum": 9007199254740991,
+                        "minimum": 1,
+                        "type": "integer"
+                      },
+                      "kind": {
+                        "enum": [
+                          "timeout",
+                          "network",
+                          "http_4xx",
+                          "http_5xx",
+                          "rate_limited",
+                          "malformed_body"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "count"
+                    ],
+                    "type": "object"
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+                },
+                "attempts": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "requests": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "unstable": {
+                  "type": "boolean"
+                }
+              },
+              "required": [
+                "requests",
+                "attempts",
+                "anomalies",
+                "unstable"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "retrieved_at": {
+          "type": "string"
+        },
+        "revision": {
+          "additionalProperties": false,
+          "properties": {
+            "note": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "status": {
+              "enum": [
+                "current",
+                "provisional",
+                "final"
+              ],
+              "type": "string"
+            }
+          },
+          "required": [
+            "status",
+            "note"
+          ],
+          "type": "object"
+        },
+        "source": {
+          "type": "string"
+        },
+        "source_url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "source",
+        "source_url",
+        "data_vintage",
+        "retrieved_at",
+        "retrieval",
+        "citation",
+        "license"
+      ],
+      "type": "object"
+    },
+    "minItems": 1,
+    "type": "array"
+  }
+]

Changed1 schema field changedOct 6, 2026

changedOutput schema / properties / provenance / anyOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "citation": {
-        "type": "string"
-      },
-      "data_vintage": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "license": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "retrieval": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "anomalies": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "count": {
-                      "maximum": 9007199254740991,
-                      "minimum": 1,
-                      "type": "integer"
-                    },
-                    "kind": {
-                      "enum": [
-                        "timeout",
-                        "network",
-                        "http_4xx",
-                        "http_5xx",
-                        "rate_limited",
-                        "malformed_body"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "count"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "attempts": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "requests": {
-                "maximum": 9007199254740991,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "unstable": {
-                "type": "boolean"
-              }
-            },
-            "required": [
-              "requests",
-              "attempts",
-              "anomalies",
-              "unstable"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "retrieved_at": {
-        "type": "string"
-      },
-      "source": {
-        "type": "string"
-      },
-      "source_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "source",
-      "source_url",
-      "data_vintage",
-      "retrieved_at",
-      "retrieval",
-      "citation",
-      "license"
-    ],
-    "type": "object"
-  },
-  {
-    "items": {
-      "additionalProperties": false,
-      "properties": {
-        "citation": {
-          "type": "string"
-        },
-        "data_vintage": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "license": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "retrieval": {
-          "anyOf": [
-            {
-              "additionalProperties": false,
-              "properties": {
-                "anomalies": {
-                  "items": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "count": {
-                        "maximum": 9007199254740991,
-                        "minimum": 1,
-                        "type": "integer"
-                      },
-                      "kind": {
-                        "enum": [
-                          "timeout",
-                          "network",
-                          "http_4xx",
-                          "http_5xx",
-                          "rate_limited",
-                          "malformed_body"
-                        ],
-                        "type": "string"
-                      }
-                    },
-                    "required": [
-                      "kind",
-                      "count"
-                    ],
-                    "type": "object"
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-                  "type": "array"
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-                "attempts": {
-                  "maximum": 9007199254740991,
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-                  "type": "integer"
-                },
-                "requests": {
-                  "maximum": 9007199254740991,
-                  "minimum": 1,
-                  "type": "integer"
-                },
-                "unstable": {
-                  "type": "boolean"
-                }
-              },
-              "required": [
-                "requests",
-                "attempts",
-                "anomalies",
-                "unstable"
-              ],
-              "type": "object"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "retrieved_at": {
-          "type": "string"
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-        "source": {
-          "type": "string"
-        },
-        "source_url": {
-          "type": "string"
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-      "required": [
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-        "source_url",
-        "data_vintage",
-        "retrieved_at",
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-        "citation",
-        "license"
-      ],
-      "type": "object"
-    },
-    "minItems": 1,
-    "type": "array"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "citation": {
+        "type": "string"
+      },
+      "data_vintage": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "field_sources": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "data_vintage": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "dataset_id": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "fields": {
+              "items": {
+                "type": "string"
+              },
+              "minItems": 1,
+              "type": "array"
+            },
+            "retrieved_at": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "served_from_cache": {
+              "type": [
+                "boolean",
+                "null"
+              ]
+            },
+            "source_url": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "fields",
+            "source_url",
+            "dataset_id",
+            "data_vintage",
+            "retrieved_at"
+          ],
+          "type": "object"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "license": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "retrieval": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "anomalies": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "count": {
+                      "maximum": 9007199254740991,
+                      "minimum": 1,
+                      "type": "integer"
+                    },
+                    "kind": {
+                      "enum": [
+                        "timeout",
+                        "network",
+                        "http_4xx",
+                        "http_5xx",
+                        "rate_limited",
+                        "malformed_body"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "count"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "requests": {
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "unstable": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "requests",
+              "attempts",
+              "anomalies",
+              "unstable"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "retrieved_at": {
+        "type": "string"
+      },
+      "source": {
+        "type": "string"
+      },
+      "source_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "source",
+      "source_url",
+      "data_vintage",
+      "retrieved_at",
+      "retrieval",
+      "citation",
+      "license"
+    ],
+    "type": "object"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "citation": {
+          "type": "string"
+        },
+        "data_vintage": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "field_sources": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "data_vintage": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "dataset_id": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "fields": {
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1,
+                "type": "array"
+              },
+              "retrieved_at": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "served_from_cache": {
+                "type": [
+                  "boolean",
+                  "null"
+                ]
+              },
+              "source_url": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "fields",
+              "source_url",
+              "dataset_id",
+              "data_vintage",
+              "retrieved_at"
+            ],
+            "type": "object"
+          },
+          "minItems": 1,
+          "type": "array"
+        },
+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "retrieval": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "anomalies": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "count": {
+                        "maximum": 9007199254740991,
+                        "minimum": 1,
+                        "type": "integer"
+                      },
+                      "kind": {
+                        "enum": [
+                          "timeout",
+                          "network",
+                          "http_4xx",
+                          "http_5xx",
+                          "rate_limited",
+                          "malformed_body"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "count"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                },
+                "attempts": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "requests": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "unstable": {
+                  "type": "boolean"
+                }
+              },
+              "required": [
+                "requests",
+                "attempts",
+                "anomalies",
+                "unstable"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "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"
+  }
+]

Changed3 schema fields changedOct 4, 2026

addedOutput schema / properties / attribution

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

addedOutput schema / properties / provenance

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "citation": {
+          "type": "string"
+        },
+        "data_vintage": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "retrieval": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "anomalies": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "count": {
+                        "maximum": 9007199254740991,
+                        "minimum": 1,
+                        "type": "integer"
+                      },
+                      "kind": {
+                        "enum": [
+                          "timeout",
+                          "network",
+                          "http_4xx",
+                          "http_5xx",
+                          "rate_limited",
+                          "malformed_body"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "count"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                },
+                "attempts": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "requests": {
+                  "maximum": 9007199254740991,
+                  "minimum": 1,
+                  "type": "integer"
+                },
+                "unstable": {
+                  "type": "boolean"
+                }
+              },
+              "required": [
+                "requests",
+                "attempts",
+                "anomalies",
+                "unstable"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "retrieved_at": {
+          "type": "string"
+        },
+        "source": {
+          "type": "string"
+        },
+        "source_url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "source",
+        "source_url",
+        "data_vintage",
+        "retrieved_at",
+        "retrieval",
+        "citation",
+        "license"
+      ],
+      "type": "object"
+    },
+    {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "citation": {
+            "type": "string"
+          },
+          "data_vintage": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "license": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "retrieval": {
+            "anyOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "anomalies": {
+                    "items": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "count": {
+                          "maximum": 9007199254740991,
+                          "minimum": 1,
+                          "type": "integer"
+                        },
+                        "kind": {
+                          "enum": [
+                            "timeout",
+                            "network",
+                            "http_4xx",
+                            "http_5xx",
+                            "rate_limited",
+                            "malformed_body"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "count"
+                      ],
+                      "type": "object"
+                    },
+                    "type": "array"
+                  },
+                  "attempts": {
+                    "maximum": 9007199254740991,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "requests": {
+                    "maximum": 9007199254740991,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "unstable": {
+                    "type": "boolean"
+                  }
+                },
+                "required": [
+                  "requests",
+                  "attempts",
+                  "anomalies",
+                  "unstable"
+                ],
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "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"
+]

Changed1 schema field changedSep 11, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed2 schema fields changedAug 31, 2026

changedInput schema / $schema

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

changedOutput schema / $schema

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

Changed12 schema fields changedJun 28, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- addedInput schema / properties / ano / maximum
```
Added value: +9007199254740991
```
- addedInput schema / properties / ano / minimum
```
Added value: +-9007199254740991
```
- addedInput schema / properties / codigoMateria / maximum
```
Added value: +9007199254740991
```
- addedInput schema / properties / codigoMateria / minimum
```
Added value: +-9007199254740991
```
- addedInput schema / properties / codigoParlamentar / maximum
```
Added value: +9007199254740991
```
- addedInput schema / properties / codigoParlamentar / minimum
```
Added value: +-9007199254740991
```
- addedInput schema / properties / idProcesso / maximum
```
Added value: +9007199254740991
```
- addedInput schema / properties / idProcesso / minimum
```
Added value: +-9007199254740991
```
- addedInput schema / properties / numero / maximum
```
Added value: +9007199254740991
```
- addedInput schema / properties / numero / minimum
```
Added value: +-9007199254740991
```
- changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +{}
```

Changed1 schema field changedJun 14, 2026

addedInput schema / properties / dias

Added value: +{
+  "description": "Janela: votações dos últimos N dias (ignorado se dataInicio/dataFim forem informados)",
+  "maximum": 365,
+  "minimum": 1,
+  "type": "integer"
+}

Changed1 schema field changedJun 13, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": true,
+  "properties": {},
+  "type": "object"
+}

First observedJun 13, 2026

TDQS

A4.8/5.0

Behavior5/5

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

Annotations already declare read-only, idempotent, non-destructive behavior, so the bar is lower, yet the description still discloses the payload shape (`{ count, votacoes }`), the sort order (most recent first), the per-item fields, and the key limitation that nominal votes are excluded. That exclusion plus the hand-off pointer is exactly the behavioral context an agent needs to avoid a wrong call.

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?

The temporal scoping rule is front-loaded, followed by the remaining filters, the return shape, and the sibling hand-off, in a logical order with no filler. It is dense for a single block but every clause carries operational information; a small formatting loss for being one long paragraph rather than short sentences.

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 10-optional-parameter read tool with full schema coverage, annotations, and an output schema, the description still covers the period-selection gotcha, result contents, ordering, and the next-step tool. Nothing an agent needs in order 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?

Schema coverage is 100%, so a 3 is the baseline, but the description adds non-obvious semantics beyond the schema: the `dias` range of 1-365 and the precedence rule that `dias` is ignored when `dataInicio`/`dataFim` are supplied, plus a worked date-format example. It stops short of explaining `siglaVotoParlamentar` or `codigoParlamentar` usage, so it is not exhaustive.

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 and resource ("Busca e lista votações do plenário") and immediately frames it as a combinable-criteria search. It also names the sibling `senado_obter_votacao` as the place to go for individual senator votes, so the agent can distinguish the two without opening either 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 explicit either/or guidance for the time window (`dias` for recent activity vs `dataInicio`/`dataFim` for an arbitrary period, with a concrete full-year example), and explicitly routes to `senado_obter_votacao` for nominal votes. The when-to-use-this-vs-alternative decision is fully specified.

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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