MCP Brazil Public Data
Enables lookup of Brazilian public data including companies (CNPJ), postal codes (CEP), banking, economy, geography, and more through 15 tools and 2 guided prompts, powered by BrasilAPI with no API key required.
README
MCP Brazil Public Data
A modern Model Context Protocol server for Brazilian public data, backed by BrasilAPI — no API key required. Exposes 15 tools and 2 guided prompts covering companies (CNPJ), postal codes (CEP), banking, economy, geography, and more.
Inspired by the project alanpcf/brasil-data-mcp, but adding Streamable-HTTP transport.
Requirements
- Python 3.10+
- uv (or Docker, for the containerized setup)
Installation
uv venv
uv pip install -e ".[dev]"
Running
The server supports two transports, selected via the MCP_TRANSPORT environment variable (see Configuration).
STDIO
The server speaks MCP over stdio by default (the transport used by most MCP clients such as Claude Desktop and Claude Code):
source .venv/bin/activate
mcp-brazil-public-data
Streamable HTTP
To serve over streamable HTTP instead:
source .venv/bin/activate
MCP_TRANSPORT=http mcp-brazil-public-data
The HTTP endpoint is then available at http://0.0.0.0:8080/mcp/.
Docker
Build the image and run it in HTTP mode (the image defaults to HTTP on port 8080):
docker build -t mcp-brazil-public-data .
docker run --rm -p 8080:8080 mcp-brazil-public-data
Override any setting at runtime with -e, e.g. a different port:
docker run --rm -p 9000:9000 -e MCP_PORT=9000 mcp-brazil-public-data
Configuration
| Variable | Default | Description |
|---|---|---|
MCP_TRANSPORT |
stdio |
Transport to use: stdio or http (streamable HTTP). |
MCP_HOST |
0.0.0.0 |
Host/interface to bind when using HTTP. Use 0.0.0.0 to expose it. |
MCP_PORT |
8080 |
Port to listen on when using HTTP. |
Available Tools
Companies & Finance
| Tool | Description | Source |
|---|---|---|
lookup_cnpj |
Company registration data (legal name, status, partners, CNAE) | Federal Revenue |
lookup_broker |
CVM-authorized brokerage firm by CNPJ | CVM |
list_banks |
List of ~250 registered banks | BACEN |
get_bank |
Bank data by COMPE code | BACEN |
Location & Geography
| Tool | Description | Source |
|---|---|---|
lookup_cep |
Full address from a postal code (CEP) | Correios/ViaCEP |
lookup_ddd |
State and cities served by an area code (DDD) | — |
list_states |
27 states (UFs) with IBGE codes | IBGE |
list_municipalities |
Municipalities of a state with IBGE codes | IBGE |
Economy
| Tool | Description | Source |
|---|---|---|
list_rates |
Current economic indices (SELIC, CDI, IPCA) | BACEN |
get_rate |
Current value of an index by symbol | BACEN |
list_currencies |
Foreign currencies available for quotes | BACEN |
get_exchange_rate |
PTAX quote of a currency on a date | BACEN |
Reference
| Tool | Description | Source |
|---|---|---|
list_holidays |
National holidays for a year | — |
lookup_isbn |
Book metadata by ISBN | CBL/Google Books |
check_br_domain |
Status of a .br domain |
Registro.br |
Guided Prompts
| Prompt | Description |
|---|---|
analyze_company |
Looks up a CNPJ and produces a structured company analysis |
economic_overview |
Combines current economic rates with the year's holidays |
Development
Testing
Run the test suite with:
pytest
License
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