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Read-onlyIdempotent

Locate IBGE statistics catalog entries such as SIDRA tables, municipalities, and indicators by keyword or natural language. Returns up to 10 matches with id, title, and URL for fetching.

Instructions

Searches the IBGE (Brazilian official statistics: SIDRA tables, municipalities, known indicators) catalog and returns up to 10 matching documents as { id, title, url }, ordered by relevance (an empty list means nothing matched).

This tool exists for the OpenAI Deep Research contract: ChatGPT deep research, company knowledge and research workflows over the Responses API require exactly the tools search and fetch. Pass one of the returned ids to fetch to read the document. For direct questions and for data (values, series, rankings) prefer the ibge_* tools (ibge_sidra, ibge_cidades, ibge_indicadores, ibge_comparar…), which return the actual data with provenance — this is a catalog index, not a data query.

Query: natural language or keywords, Portuguese or English; accents and case are ignored.

Behavior: read-only and idempotent — the catalog comes from the public source and is cached in memory.

Input Schema

NameRequiredDescriptionDefault
queryYesTermos de busca em linguagem natural ou palavras-chave (acentos e caixa são ignorados)

Output Schema

NameRequiredDescriptionDefault
resultsYesDocumentos encontrados, em ordem de relevância
provenanceYesBloco de proveniência do portfólio: fonte, URL, período, extração, diagnóstico de origem e licença
attributionYesURLs canônicas das fontes desta resposta (lista de atribuição)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed7 schema fields changedv5.10.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"Bloco de proveniência (contrato v1.1): fonte, URL, período, extração, diagnóstico de origem e licença"New value: +"Bloco de proveniência do portfólio: fonte, URL, período, extração, diagnóstico de origem e licença"
    • addedOutput schema / properties / provenance / properties / derivation_note
      Added value: +{
      +  "description": "O que o servidor calculou; presente junto com derived",
      +  "type": "string"
      +}
    • addedOutput schema / properties / provenance / properties / derived
      Added value: +{
      +  "description": "Presente (true) só quando o servidor calculou o valor — estatísticas, rankings, comparações — em vez de repassá-lo como veio do IBGE",
      +  "type": "boolean"
      +}
    • addedOutput schema / properties / provenance / properties / field_sources
      Added value: +{
      +  "description": "Proveniência por sub-fonte: presente só quando a resposta junta partes extraídas de origens ou em momentos distintos, uma entrada por grupo de campos; ausente quando a resposta vem de uma única extração",
      +  "items": {
      +    "additionalProperties": false,
      +    "description": "Proveniência de um grupo de campos da resposta: de onde veio e quando foi extraído",
      +    "properties": {
      +      "data_vintage": {
      +        "description": "Vintage/competência da sub-fonte",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "dataset_id": {
      +        "description": "Identificador do conjunto da sub-fonte",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "fields": {
      +        "description": "Campos do payload atribuídos a esta sub-fonte",
      +        "items": {
      +          "type": "string"
      +        },
      +        "minItems": 1,
      +        "type": "array"
      +      },
      +      "retrieved_at": {
      +        "description": "ISO-8601 da extração desta sub-fonte na origem",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "served_from_cache": {
      +        "description": "true se esta sub-fonte veio do cache do servidor (retrieved_at é o da extração original); false se foi buscada nesta chamada; null se o servidor não distingue",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "source_url": {
      +        "description": "URL canônica da sub-fonte que originou estes campos",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "fields",
      +      "source_url",
      +      "dataset_id",
      +      "data_vintage",
      +      "retrieved_at"
      +    ],
      +    "type": "object"
      +  },
      +  "minItems": 1,
      +  "type": "array"
      +}
    • addedOutput schema / properties / provenance / properties / notices
      Added value: +{
      +  "description": "Avisos que o IBGE publica junto com o dado (quebra de série, unidade, atualização), copiados como vieram; ausente quando não há aviso",
      +  "items": {
      +    "type": "string"
      +  },
      +  "minItems": 1,
      +  "type": "array"
      +}
    • changedOutput schema / properties / provenance / properties / retrieval / description
      Previous value: -"Diagnóstico de origem desta chamada (contrato v1.1): idas à API do IBGE, tentativas somadas e anomalias contornadas; unstable=true quando houve anomalia. null quando nada foi medido (resposta servida só do cache)"New value: +"Diagnóstico de origem desta chamada: idas à API do IBGE, tentativas somadas e anomalias contornadas; unstable=true quando houve anomalia. null quando nada foi medido (resposta servida só do cache)"
    • addedOutput schema / properties / provenance / properties / revision
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "Se o dado ainda pode mudar no IBGE: current = versão vigente na extração, que o IBGE pode revisar depois; provisional = preliminar; final = não muda mais. note traz o específico da fonte quando há",
      +  "properties": {
      +    "note": {
      +      "description": "O específico da fonte: o que revisa, quando, por quê",
      +      "type": [
      +        "string",
      +        "null"
      +      ]
      +    },
      +    "status": {
      +      "description": "current = versão vigente, a fonte pode revisá-la; provisional = preliminar, incompleta ou sujeita a mudança (não compare como se fosse fechada); final = não muda mais, declarado pela fonte",
      +      "enum": [
      +        "current",
      +        "provisional",
      +        "final"
      +      ],
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "status",
      +    "note"
      +  ],
      +  "type": "object"
      +}
  2. Changed1 schema field changedv5.5.1
    • addedInput schema / additionalProperties
      Added value: +false
  3. Changed3 schema fields changedv5.4.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"Bloco de proveniência (contrato v1.0): fonte, URL, período, extração e licença"New value: +"Bloco de proveniência (contrato v1.1): fonte, URL, período, extração, diagnóstico de origem e licença"
    • addedOutput schema / properties / provenance / properties / retrieval
      Added value: +{
      +  "anyOf": [
      +    {
      +      "additionalProperties": false,
      +      "properties": {
      +        "anomalies": {
      +          "description": "Anomalias superadas até o sucesso, somadas por classe, em ordem fixa; [] se nenhuma",
      +          "items": {
      +            "additionalProperties": false,
      +            "properties": {
      +              "count": {
      +                "description": "Ocorrências desta classe na chamada",
      +                "maximum": 9007199254740991,
      +                "minimum": 1,
      +                "type": "integer"
      +              },
      +              "kind": {
      +                "description": "Classe da anomalia (vocabulário fechado do contrato)",
      +                "enum": [
      +                  "timeout",
      +                  "network",
      +                  "http_4xx",
      +                  "http_5xx",
      +                  "rate_limited",
      +                  "malformed_body"
      +                ],
      +                "type": "string"
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "count"
      +            ],
      +            "type": "object"
      +          },
      +          "type": "array"
      +        },
      +        "attempts": {
      +          "description": "Tentativas somadas, incluindo as repetidas (>= requests)",
      +          "maximum": 9007199254740991,
      +          "minimum": 1,
      +          "type": "integer"
      +        },
      +        "requests": {
      +          "description": "Idas distintas à origem que compõem esta resposta (fatias, páginas)",
      +          "maximum": 9007199254740991,
      +          "minimum": 1,
      +          "type": "integer"
      +        },
      +        "unstable": {
      +          "description": "true se houve repetição (attempts > requests) ou alguma anomalia",
      +          "type": "boolean"
      +        }
      +      },
      +      "required": [
      +        "requests",
      +        "attempts",
      +        "anomalies",
      +        "unstable"
      +      ],
      +      "type": "object"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "description": "Diagnóstico de origem desta chamada (contrato v1.1): idas à API do IBGE, tentativas somadas e anomalias contornadas; unstable=true quando houve anomalia. null quando nada foi medido (resposta servida só do cache)"
      +}
    • changedOutput schema / properties / provenance / required
      Previous value: -[
      -  "source",
      -  "source_url",
      -  "data_vintage",
      -  "retrieved_at",
      -  "citation",
      -  "license"
      -]New value: +[
      +  "source",
      +  "source_url",
      +  "data_vintage",
      +  "retrieved_at",
      +  "retrieval",
      +  "citation",
      +  "license"
      +]
  4. Addedv4.3.0

TDQS

A4.8/5.0
Behavior5/5

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

Annotations already cover read-only, idempotent and non-destructive, and the description still adds real context beyond them: results are capped at 10, empty list signals no match, results are relevance-ordered, and the catalog comes from a public source cached in memory. The 'read-only and idempotent' sentence partially restates annotations but the surrounding facts are genuinely additive.

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 action and return shape, then workflow, then alternatives, then query semantics — a sensible order with no wasted sentences. Slight redundancy in the final paragraph, where 'read-only and idempotent' repeats the annotations rather than adding new information.

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 single-parameter read tool with an output schema and full annotations, the description covers everything an agent needs: what it searches, what it returns, how many, what empty means, and how it feeds `fetch`. Return-value detail is backed by the output schema, so nothing material 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% and the parameter's own description already covers natural-language/keyword input and accent/case insensitivity, so the baseline is 3. The description adds that queries may be in Portuguese or English, which the schema does not state, giving a modest lift above baseline.

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 (searches) and resource (the IBGE catalog), names the return shape { id, title, url } and the ordering (relevance), and explicitly distinguishes itself from the ibge_* siblings by calling itself 'a catalog index, not a data query'. An agent can tell this apart from ibge_sidra or ibge_indicadores without opening any schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives explicit when-to-use (the OpenAI Deep Research contract requiring exactly `search` and `fetch`), an explicit hand-off ('Pass one of the returned ids to `fetch`'), and an explicit when-not/prefer-instead rule routing data questions to the ibge_* tools. Nothing 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.