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ibge-br-mcp

npm version npm downloads Tests Coverage License: MIT ibge-br-mcp MCP server

Live, exact Brazilian public data for your AI assistant β€” with provenance, not guesswork.

Ask an LLM "what was Belo Horizonte's population in the 2022 Census?" and you get a plausible number from its training data: maybe right, maybe outdated, with no source. ibge-br-mcp instead has your assistant query the official IBGE APIs in real time β€” returning the exact figure together with the table and period it came from.

πŸ‡§πŸ‡· Leia em PortuguΓͺs

This server implements the Model Context Protocol (MCP) to give AI assistants live, structured access to Brazil's public geographic, demographic, economic, and health data β€” sourced from the IBGE APIs (including health indicators served through IBGE's SIDRA system).

Features

  • 22 specialized tools covering all major IBGE data domains

  • Reference resources & analysis prompts (MCP catalogs + ready-made templates)

  • 460 automated tests with 97%+ core coverage

  • Automatic caching with configurable TTL for optimal performance

  • Retry mechanism with exponential backoff for network resilience

  • Comprehensive validation for all input parameters

  • Standardized error handling with helpful suggestions

  • Full TypeScript support with strict typing

Related MCP server: Brazilian CEP MCP

Available Tools

Localities & Geography

Tool

Description

ibge_estados

List Brazilian states with region filtering

ibge_municipios

List municipalities by state or search by name

ibge_localidade

Get details of a locality by IBGE code

ibge_geocodigo

Decode IBGE codes or search codes by name

ibge_vizinhos

Find neighboring municipalities

Statistical Data (SIDRA)

Tool

Description

ibge_sidra

Query SIDRA tables (Census, PNAD, GDP, etc.)

ibge_sidra_tabelas

List and search available SIDRA tables

ibge_sidra_metadados

Get table metadata (variables, periods, levels)

ibge_pesquisas

List IBGE research surveys and their tables

Economic & Social Indicators

Tool

Description

ibge_indicadores

Economic and social indicators (GDP, IPCA, unemployment)

ibge_censo

Census data (1970-2022) with 16 themes

ibge_comparar

Compare indicators across localities with rankings

Municipal Data (Cidades@)

Tool

Description

ibge_cidades

Municipal indicators (population, HDI, GDP per capita, etc.)

International Data

Tool

Description

ibge_paises

Country data following UN M49 methodology

Demographics

Tool

Description

ibge_populacao

Real-time Brazilian population projection

ibge_nomes

Name frequency and rankings in Brazil

Classifications

Tool

Description

ibge_cnae

CNAE (National Classification of Economic Activities)

Maps & Geographic Meshes

Tool

Description

ibge_malhas

Geographic meshes (GeoJSON, TopoJSON, SVG)

ibge_malhas_tema

Thematic meshes (biomes, Legal Amazon, semi-arid)

Health

Tool

Description

datasaude

Health indicators via IBGE's SIDRA

News & Calendar

Tool

Description

ibge_noticias

IBGE news and press releases

ibge_calendario

IBGE release and collection calendar

Which tool should I use?

With 22 tools, several can touch the same topic. Quick guide for the common overlaps:

Population & demographics

You want…

Use

Brazil's population right now (real-time)

ibge_populacao

A single municipality/state panel (population, HDI, GDP…)

ibge_cidades

Census data or historical series (1970–2022)

ibge_censo

Rank/compare 2–10 localities on one indicator

ibge_comparar

A macro indicator time series (GDP, IPCA, unemployment…)

ibge_indicadores

A specific SIDRA table / fine control

ibge_sidra

Economic indicators

You want…

Use

IPCA, INPC, GDP, unemployment (IBGE, primary source)

ibge_indicadores

Localities & codes

You want…

Use

List/search municipalities

ibge_municipios

List states

ibge_estados

Resolve a name→code at any level, or decode a code's structure

ibge_geocodigo

Full record of one locality you already have the code for

ibge_localidade

Neighboring municipalities

ibge_vizinhos

SIDRA workflow

Discover β†’ inspect β†’ query: ibge_pesquisas / ibge_sidra_tabelas (find a table) β†’ ibge_sidra_metadados (its structure) β†’ ibge_sidra (query). For common data, the wrappers above (ibge_censo, ibge_indicadores, ibge_comparar, ibge_cidades) are usually easier.

Maps (meshes)

You want…

Use

Administrative outlines (Brazil/region/state/municipality)

ibge_malhas

Thematic areas (biomes, Legal Amazon, semi-arid, metro regions)

ibge_malhas_tema

Installation

Prerequisites

  • Node.js 18.x or higher

  • npm or yarn

npm install -g ibge-br-mcp

From source

# Clone the repository
git clone https://github.com/SidneyBissoli/ibge-br-mcp.git
cd ibge-br-mcp

# Install dependencies
npm install

# Build the project
npm run build

Configuration

Claude Desktop

Add to your Claude Desktop configuration file (claude_desktop_config.json):

{
  "mcpServers": {
    "ibge-br-mcp": {
      "command": "npx",
      "args": ["ibge-br-mcp"]
    }
  }
}

Or if installed from source:

{
  "mcpServers": {
    "ibge-br-mcp": {
      "command": "node",
      "args": ["/path/to/ibge-br-mcp/dist/index.js"]
    }
  }
}

Claude Code

{
  "mcpServers": {
    "ibge-br-mcp": {
      "command": "npx",
      "args": ["ibge-br-mcp"]
    }
  }
}

Tool Usage Examples

ibge_estados

List all Brazilian states.

# List all states
ibge_estados

# States in Northeast region
ibge_estados(regiao="NE")

# States sorted by abbreviation
ibge_estados(ordenar="sigla")

ibge_municipios

List Brazilian municipalities.

# Municipalities of SΓ£o Paulo state
ibge_municipios(uf="SP")

# Search municipalities by name
ibge_municipios(busca="Campinas")

# Municipalities in MG containing "Belo"
ibge_municipios(uf="MG", busca="Belo")

ibge_cidades

Query municipal indicators (similar to Cidades@ portal).

# Panorama of SΓ£o Paulo
ibge_cidades(tipo="panorama", municipio="3550308")

# Population history
ibge_cidades(tipo="historico", municipio="3550308", indicador="populacao")

# List available research
ibge_cidades(tipo="pesquisas")

Available indicators: populacao, area, densidade, pib_per_capita, idh, escolarizacao, mortalidade, salario_medio, receitas, despesas

ibge_paises

Query international country data.

# List all countries
ibge_paises(tipo="listar")

# Brazil details
ibge_paises(tipo="detalhes", pais="BR")

# Search countries
ibge_paises(tipo="buscar", busca="Argentina")

# Countries in Americas
ibge_paises(tipo="listar", regiao="americas")

Regions: americas, europa, africa, asia, oceania

ibge_sidra

Query SIDRA tables (IBGE's Automatic Recovery System).

# Brazil population in 2023
ibge_sidra(tabela="6579", periodos="2023")

# Population by state
ibge_sidra(tabela="6579", nivel_territorial="3", periodos="2023")

# Census 2022 for SΓ£o Paulo municipality
ibge_sidra(tabela="9514", nivel_territorial="6", localidades="3550308")

Common tables:

Code

Description

6579

Population estimates (annual)

9514

Census 2022 population

4714

Unemployment rate (PNAD)

6706

GDP at current prices

Territorial levels:

Code

Level

1

Brazil

2

Region (North, Northeast, etc.)

3

State (UF)

6

Municipality

7

Metropolitan Region

106

Health Region

127

Legal Amazon

128

Semi-arid

ibge_censo

Query Census data (1970-2022).

# Population Census 2022
ibge_censo(ano="2022", tema="populacao")

# Historical population series
ibge_censo(ano="todos", tema="populacao")

# Literacy by state in 2010
ibge_censo(ano="2010", tema="alfabetizacao", nivel_territorial="3")

Available themes: populacao, alfabetizacao, domicilios, idade_sexo, religiao, cor_raca, rendimento, migracao, educacao, trabalho

ibge_indicadores

Query economic and social indicators.

# GDP
ibge_indicadores(indicador="pib")

# IPCA last 12 months
ibge_indicadores(indicador="ipca", periodos="last 12")

# Unemployment by state
ibge_indicadores(indicador="desemprego", nivel_territorial="3")

# List all indicators
ibge_indicadores(indicador="listar")

Available indicators:

Category

Indicators

Economic

pib, pib_variacao, pib_per_capita, industria, comercio, servicos

Prices

ipca, ipca_acumulado, inpc

Labor

desemprego, ocupacao, rendimento, informalidade

Population

populacao, densidade

Agriculture

agricultura, pecuaria

ibge_nomes

Query name frequency and rankings.

# Frequency of "Maria"
ibge_nomes(tipo="frequencia", nomes="Maria")

# Compare names
ibge_nomes(tipo="frequencia", nomes="JoΓ£o,JosΓ©,Pedro")

# Ranking of names in 2000s
ibge_nomes(tipo="ranking", decada=2000)

# Female names ranking
ibge_nomes(tipo="ranking", sexo="F")

ibge_malhas

Get geographic meshes (maps).

# Brazil with states
ibge_malhas(localidade="BR", resolucao="2")

# SΓ£o Paulo with municipalities
ibge_malhas(localidade="SP", resolucao="5")

# Specific municipality
ibge_malhas(localidade="3550308")

# SVG format
ibge_malhas(localidade="BR", formato="svg")

Resolution levels:

Value

Internal Divisions

0

No divisions (outline only)

2

States

5

Municipalities

datasaude

Query Brazilian health indicators served through IBGE's SIDRA (some originally produced by DataSUS, e.g. mortality and births).

# Infant mortality in Brazil
datasaude(indicador="mortalidade_infantil")

# Life expectancy by state
datasaude(indicador="esperanca_vida", nivel_territorial="3")

# List indicators
datasaude(indicador="listar")

Available indicators: mortalidade_infantil, esperanca_vida, nascidos_vivos, obitos, fecundidade, saneamento_agua, saneamento_esgoto, plano_saude

APIs Used

IBGE APIs

  • Localities: servicodados.ibge.gov.br/api/v1/localidades

  • Names: servicodados.ibge.gov.br/api/v2/censos/nomes

  • Aggregates/SIDRA: servicodados.ibge.gov.br/api/v3/agregados

  • SIDRA API: apisidra.ibge.gov.br/values

  • Meshes: servicodados.ibge.gov.br/api/v3/malhas

  • News: servicodados.ibge.gov.br/api/v3/noticias

  • Population: servicodados.ibge.gov.br/api/v1/projecoes/populacao

  • CNAE: servicodados.ibge.gov.br/api/v2/cnae

  • Calendar: servicodados.ibge.gov.br/api/v3/calendario

  • Countries: servicodados.ibge.gov.br/api/v1/paises

  • Research: servicodados.ibge.gov.br/api/v1/pesquisas

Development

# Build
npm run build

# Watch mode
npm run watch

# Run tests
npm test

# Run tests in watch mode
npm run test:watch

# Lint
npm run lint

# Format
npm run format

# Test with MCP inspector
npm run inspector

Project Structure

ibge-br-mcp/
β”œβ”€β”€ src/
β”‚   β”œβ”€β”€ index.ts              # Main MCP server
β”‚   β”œβ”€β”€ types.ts              # TypeScript types
β”‚   β”œβ”€β”€ config.ts             # Configuration and constants
β”‚   β”œβ”€β”€ cache.ts              # Request caching system
β”‚   β”œβ”€β”€ retry.ts              # Retry with exponential backoff
β”‚   β”œβ”€β”€ errors.ts             # Standardized error handling
β”‚   β”œβ”€β”€ validation.ts         # Input validation helpers
β”‚   β”œβ”€β”€ metrics.ts            # Metrics and logging
β”‚   β”œβ”€β”€ utils/
β”‚   β”‚   └── formatters.ts     # Formatting utilities
β”‚   └── tools/
β”‚       β”œβ”€β”€ index.ts          # Tool exports
β”‚       β”œβ”€β”€ estados.ts        # ibge_estados
β”‚       β”œβ”€β”€ municipios.ts     # ibge_municipios
β”‚       β”œβ”€β”€ localidade.ts     # ibge_localidade
β”‚       β”œβ”€β”€ geocodigo.ts      # ibge_geocodigo
β”‚       β”œβ”€β”€ censo.ts          # ibge_censo
β”‚       β”œβ”€β”€ populacao.ts      # ibge_populacao
β”‚       β”œβ”€β”€ sidra.ts          # ibge_sidra
β”‚       β”œβ”€β”€ sidra-tabelas.ts  # ibge_sidra_tabelas
β”‚       β”œβ”€β”€ sidra-metadados.ts# ibge_sidra_metadados
β”‚       β”œβ”€β”€ indicadores.ts    # ibge_indicadores
β”‚       β”œβ”€β”€ cnae.ts           # ibge_cnae
β”‚       β”œβ”€β”€ calendario.ts     # ibge_calendario
β”‚       β”œβ”€β”€ comparar.ts       # ibge_comparar
β”‚       β”œβ”€β”€ malhas.ts         # ibge_malhas
β”‚       β”œβ”€β”€ malhas-tema.ts    # ibge_malhas_tema
β”‚       β”œβ”€β”€ vizinhos.ts       # ibge_vizinhos
β”‚       β”œβ”€β”€ datasaude.ts      # datasaude
β”‚       β”œβ”€β”€ pesquisas.ts      # ibge_pesquisas
β”‚       β”œβ”€β”€ nomes.ts          # ibge_nomes
β”‚       β”œβ”€β”€ noticias.ts       # ibge_noticias
β”‚       β”œβ”€β”€ paises.ts         # ibge_paises
β”‚       └── cidades.ts        # ibge_cidades
β”œβ”€β”€ tests/                    # Test files
β”œβ”€β”€ dist/                     # Compiled files
β”œβ”€β”€ package.json
β”œβ”€β”€ tsconfig.json
β”œβ”€β”€ vitest.config.ts
└── README.md

Testing

The project includes a comprehensive test suite with 227 tests covering:

  • Validation functions

  • Retry mechanism

  • Formatting utilities

  • Error handling

  • Cache operations

  • Integration tests with mocks

npm test

Quality Assurance

This project maintains high code quality standards:

  • 227 automated tests covering validation, caching, retry logic, formatting, and integrations

  • 97%+ test coverage on core modules (cache, validation, errors, types)

  • ESLint for code linting with zero warnings

  • Prettier for consistent code formatting

  • TypeScript strict mode for type safety

  • Automated CI/CD via GitHub Actions

Run tests locally:

# Run all tests
npm test

# Run tests with coverage
npm run test:coverage

# Run linter
npm run lint

License

MIT

Author

Sidney da Silva Pereira Bissoli

References

Install Server
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maintenance

Maintenance

–Maintainers
151dResponse time
4wRelease cycle
6Releases (12mo)
Commit activity

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