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io.github.viniciuslazzari/bolsai-mcp

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Brazilian stock market data (B3, CVM, BCB) for AI assistants: quotes, fundamentals, dividends, FIIs.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package bolsai-mcp
Claude Code 
claude mcp add bolsai-mcp -e 'BOLSAI_API_KEY=<your bolsai_api_key>' -- uvx bolsai-mcp==0.1.4
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "bolsai-mcp": {
            "command": "uvx",
            "args": [
                "bolsai-mcp==0.1.4"
            ],
            "env": {
                "BOLSAI_API_KEY": "<your bolsai_api_key>"
            }
        }
    }
}

Environment variables

  • BOLSAI_API_KEY required secret Your bolsai API key (free tier available at usebolsai.com)

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Bolsai - MCP Server
  2. Quick Start
  3. Tools
  4. Example Conversations
  5. Data Coverage
  6. Configuration
  7. API Tiers
  8. Development
  9. License

Bolsai - MCP Server

Brazilian financial market data for AI assistants. Query stock prices, fundamentals, dividends, FIIs, and macro indicators from the Brazilian market (B3, CVM, BCB) directly from Claude.

Quick Start

  1. Get a free API key at usebolsai.com
  2. Install: bash pip install bolsai-mcp
  3. Add to Claude Desktop (claude_desktop_config.json): json { "mcpServers": { "bolsai": { "command": "uvx", "args": ["bolsai-mcp"], "env": { "BOLSAI_API_KEY": "sk_your_key_here" } } } }

Or for Claude Code (.mcp.json):

{
  "mcpServers": {
    "bolsai": {
      "command": "bolsai-mcp",
      "env": {
        "BOLSAI_API_KEY": "sk_your_key_here"
      }
    }
  }
}

Tools

ToolDescriptionExample Prompt
get_stock_quoteCurrent price, daily change, 52w range"What's PETR4 trading at?"
get_fundamentals27+ indicators: P/L, P/VP, ROE, margins"Show me VALE3 fundamentals"
compare_stocksSide-by-side comparison of up to 5 stocks"Compare PETR4 vs VALE3 vs ITUB4"
get_dividendsDividend yield, annual summary, payments"What dividends did BBDC4 pay?"
search_companiesFind companies by name or sector"Find banks listed on B3"
get_price_historyOHLCV prices since 1986 with adjustments"PETR4 prices last month"
get_fii_detailsFII fundamentals + distributions"Show me HGLG11"
get_macro_indicatorSELIC, IPCA, CDI, USD/BRL"What's the current SELIC rate?"
get_financial_statementsRaw CVM income/balance/cash flow"PETR4 income statement 2024"
screen_stocksFilter stocks by metrics"Find stocks with DY > 8%"

Example Conversations

"What's PETR4 trading at?"

PETR4
Price: R$ 36.19
Change: +R$ 0.53 (+1.49%)
Date: 2024-12-30
52-week: R$ 28.44 – R$ 42.15
YTD: +12.34%

"Compare PETR4 vs VALE3"

Comparison: PETR4 vs VALE3

Metric              PETR4       VALE3
─────────────────────────────────────
P/L                  4.89        5.23
P/VP                 1.12        1.45
EV/EBITDA            3.21        3.87
ROE                33.20%      27.70%
Net Margin         24.50%      23.10%
DY                 12.30%       9.90%
Price           R$ 36.19    R$ 58.42

Data Coverage

  • 350+ stocks listed on B3
  • 400+ FIIs (Real Estate Investment Funds)
  • 40 years of price history (since 1986)
  • 15+ years of fundamentals (since 2010)
  • 27 indicators including P/L, P/VP, EV/EBITDA, ROE, ROIC, margins
  • Macro data: SELIC, IPCA, CDI, USD/BRL
  • Updated daily from official sources (B3, CVM, BCB)

Configuration

Environment VariableRequiredDefaultDescription
BOLSAI_API_KEYYes—API key from usebolsai.com
BOLSAI_BASE_URLNohttps://usebolsai.com/api/v1API base URL

API Tiers

  • Free: 200 requests/day. Stock quotes, current fundamentals, company search.
  • Pro (R$ 49/month): 10,000 requests/day. All tools including history, dividends, financials, macro.

Development

cd mcp-server
pip install -e ".[dev]"
pytest
ruff check . && ruff format .

License

MIT

Frequently asked questions

What is io.github.viniciuslazzari/bolsai-mcp?

Brazilian stock market data (B3, CVM, BCB) for AI assistants: quotes, fundamentals, dividends, FIIs.

How do I install io.github.viniciuslazzari/bolsai-mcp?

It runs on your machine. In Claude Code: claude mcp add bolsai-mcp -e 'BOLSAI_API_KEY=<your bolsai_api_key>' -- uvx bolsai-mcp==0.1.4. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.viniciuslazzari/bolsai-mcp need an API key?

Yes. It expects BOLSAI_API_KEY, which you set in its configuration.

Is io.github.viniciuslazzari/bolsai-mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.viniciuslazzari/bolsai-mcp?

It is published by viniciuslazzari. AI.tn lists it but does not maintain or endorse it.

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