Dados Abertos Senado BR MCP

Resultado de veto

senado_resultado_veto

Read-onlyIdempotent

Obtém o resultado da apreciação de um veto presidencial. Retorna { codigo, tipo, resultado }, onde resultado é o objeto bruto da API (sem wrappers), com campos variáveis — tipicamente identificação do veto, situação por dispositivo (ex.: "Rejeitado"/"Mantido") e link do PDF do resultado nominal (PdfsResultadoVotacao). A API não fornece placar numérico (sim/não) aqui — o detalhamento nominal está no PDF; vem objeto vazio quando o veto ainda não foi votado e retorna erro se o codigo não existir. tipo define o que codigo representa: veto (código do veto, padrão), materia (código do projeto vetado) ou dispositivo (dispositivo de veto parcial) — as três chaves apontam para o mesmo veto. Obtenha o código via senado_vetos. Para listar vetos (não o resultado de um) use senado_vetos.

Input Schema

Name	Required	Description	Default
`tipo`	No	Define a chave em codigo: veto = código do veto (padrão); materia = código do projeto vetado; dispositivo = dispositivo de veto parcial	veto
`codigo`	Yes	Código do veto, da matéria vetada ou do dispositivo — qual deles depende de `tipo`

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

Changed2 schema fields changedJul 8, 2026

changedInput schema / properties / codigo / description

Previous value: -"Código do veto, da matéria ou do dispositivo, conforme o tipo"New value: +"Código do veto, da matéria vetada ou do dispositivo — qual deles depende de `tipo`"

changedInput schema / properties / tipo / description

Previous value: -"veto = código do veto (padrão); materia = código do projeto vetado; dispositivo = dispositivo de veto parcial"New value: +"Define a chave em codigo: veto = código do veto (padrão); materia = código do projeto vetado; dispositivo = dispositivo de veto parcial"

Changed3 schema fields changedJun 28, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- addedInput schema / properties / codigo / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +{}
```

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?

Goes well beyond the readOnly/idempotent annotations by disclosing the failure modes: an empty object when the veto has not yet been voted and an error when `codigo` does not exist. It also warns that no numeric yes/no tally is available here and that the nominal breakdown lives in the PDF.

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 purpose, then return shape, edge cases, parameter meaning, and sibling routing — each sentence carries distinct information. It is dense and parts of the return-shape discussion overlap with 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?

With annotations covering the safety profile and an output schema present, the remaining burdens are error/empty-result behavior, parameter interdependence, and sibling routing — all addressed explicitly.

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 earns above that by explaining that the three `tipo` keys address the same veto and that `codigo`'s meaning shifts with `tipo`. This is a semantic relationship the schema does not spell out.

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 ('Obtém o resultado da apreciação de um veto presidencial') and explicitly contrasts with the sibling that lists vetoes rather than returning one result. An agent can distinguish it from senado_vetos 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 both directions: obtain the code via `senado_vetos`, and use `senado_vetos` instead when the goal is listing vetoes rather than a single result. No alternative is left 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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