Brazilian Central Bank (BCB) - MCP

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MCP (Model Context Protocol) server for the Brazilian Central Bank (Banco Central do Brasil, BCB) time series data (SGS/BCB).

Query economic and financial indicators such as Selic (interest rate), IPCA (inflation), exchange rates, GDP, and more, directly from AI assistants like Claude.

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Capabilities: 8 tools (skills) · 3 resources · 3 prompts — everything an MCP client needs to query the Brazilian Central Bank (SGS/BCB) time-series API.

See it in action

Ask your assistant, in plain Portuguese:

• "Qual a taxa Selic atual?" → bcb_indicadores_atuais
• "Mostre o IPCA mês a mês em 2024." → bcb_serie_valores
• "Qual foi a variação do dólar nos últimos 12 meses?" → bcb_variacao

The answers come live from the Brazilian Central Bank's SGS API — exact figures with provenance, not numbers guessed from training data.

Features

• Historical data - Query time series values by code with date filters
• Latest values - Get the most recent N values of any series
• Metadata - Detailed information about series (frequency, source, etc.)
• Popular series catalog - 150+ economic indicators organized in 12 categories
• Smart search - Find series by keyword (accent-insensitive)
• Current indicators - Latest values for key economic indicators
• Variation calculation - Percentage change between periods with statistics
• Series comparison - Compare multiple series over the same period

Available Tools

Resources

Reference catalogs the server exposes as MCP resources (read-only contextual data that clients can attach):

Prompts

Ready-made templates the server provides as MCP prompts:

Installation

Via Smithery (recommended)

Visit bcb-br-mcp on Smithery and follow the installation instructions for your MCP client.

Via URL (Claude.ai, Claude Desktop, any MCP client)

Use the HTTP endpoint directly, no installation required:

https://bcb.sidneybissoli.workers.dev

Via npx (Claude Desktop)

Add to your Claude Desktop configuration file:

Windows: %APPDATA%\Claude\claude_desktop_config.json

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

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

Via global install

npm install -g bcb-br-mcp

{
  "mcpServers": {
    "bcb-br": {
      "command": "bcb-br-mcp"
    }
  }
}

Usage Examples

Get the current Selic rate

What is the current Selic interest rate?
→ Uses bcb_indicadores_atuais

IPCA history for 2024

Show me the monthly IPCA for 2024
→ Uses bcb_serie_valores with code 433, dataInicial 2024-01-01, dataFinal 2024-12-31

List inflation indicators

What inflation series are available?
→ Uses bcb_series_populares with category "Inflação"

Search for USD exchange rate series

Search for series related to the dollar
→ Uses bcb_buscar_serie with term "dolar" (works without accents)

Calculate USD/BRL variation

What was the USD/BRL variation over the last 12 months?
→ Uses bcb_variacao with code 1 and periodos 12

Compare IPCA, IGP-M, and INPC

Compare IPCA, IGP-M, and INPC in 2024
→ Uses bcb_comparar with codes [433, 189, 188], dataInicial 2024-01-01, dataFinal 2024-12-31

Series Catalog (150+)

The server includes a catalog of 150+ series organized in 12 categories.

Interest Rates

Inflation (30+ series)

Exchange Rates (15+ series)

Economic Activity (25+ series)

Employment (10+ series)

Fiscal (10+ series)

External Sector (15+ series)

Credit (30+ series)

Monetary Aggregates

Savings

Market Indices

Expectations (Focus Survey)

Finding Other Series

The SGS database contains over 18,000 time series. To find codes for other series:

1. Visit the BCB SGS Portal
2. Search for the desired series
3. Note the series code
4. Use that code with this server's tools

Technical Details

Robustness

• Timeout: 30 seconds per request (prevents hanging)
• Auto-retry: 3 attempts with exponential backoff (1s, 2s, 4s)
• Error handling: Clear error messages

Smart Search

The bcb_buscar_serie tool normalizes search terms, allowing you to find series even without Portuguese accents:

• "inflacao" → finds "Inflação"
• "cambio" → finds "Câmbio"
• "credito" → finds "Crédito"

Development

Requirements

• Node.js >= 18.0.0

Setup

git clone https://github.com/SidneyBissoli/bcb-br-mcp.git
cd bcb-br-mcp
npm install

Build

npm run build

Local testing (stdio)

npm run dev

Local testing (HTTP worker)

npm run dev:worker

Or use the MCP Inspector:

npx @modelcontextprotocol/inspector npm run dev

BCB API

This server uses the Brazilian Central Bank's public API:

• Base endpoint: https://api.bcb.gov.br/dados/serie/bcdata.sgs.{code}/dados
• Format: JSON
• Authentication: None (public API)
• Documentation: BCB Open Data

Changelog

v1.2.0

• HTTP endpoint via Cloudflare Workers (https://bcb.sidneybissoli.workers.dev)
• Published on Smithery.ai
• Refactored: tool logic extracted to src/tools.ts (shared between stdio and HTTP)

v1.1.0

• New tool bcb_variacao for percentage variation calculation
• New tool bcb_comparar for comparing multiple series
• 30-second timeout on requests
• Auto-retry with exponential backoff (3 attempts)
• Normalized search (accent-insensitive)
• Additional statistics (max, min, average, range)

v1.0.0

• Initial release
• 6 basic tools
• Catalog with 150+ series

Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/new-feature)
3. Commit your changes (git commit -m 'Add new feature')
4. Push to the branch (git push origin feature/new-feature)
5. Open a Pull Request

License

MIT - see LICENSE for details.

Author

Sidney da Silva Pereira Bissoli

• GitHub: @SidneyBissoli
• Email: sbissoli76@gmail.com

Useful Links

• BCB SGS Portal
• BCB Open Data
• Model Context Protocol
• MCP Registry
• Smithery: bcb-br-mcp
• npm: bcb-br-mcp