An MCP connector that gives your AI agent (Claude, ChatGPT, Cursor and others) access to fundamentals for Brazilian listed companies (B3) — banks and insurers included — from 2010 to today, with a…
Dados B3 | MCP Server is an MCP project maintained in the val7h/dados-b3-mcp repository. The maintainer describes its purpose as “An MCP connector that gives your AI agent (Claude, ChatGPT, Cursor and others) access to fundamentals for Brazilian listed companies (B3) — banks and insurers…”. Read the project documentation for the complete scope.
The project provides a local client configuration using python. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.
The example declares DADOS_B3_API_KEY. Secret-looking values have been replaced with placeholders. Required and optional labels are shown only when the documentation states them.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| listar_empresas | Every covered company (name, tax ID, ticker), banks and insurers included |
| indicadores_anuais | ROE, ROIC, margins, growth, net debt/EBITDA — annual series from 2010 |
| multiplos | P/E, P/B, EV/EBITDA point-in-time; trailing P/E |
| fatos_contabeis | Standardised accounts carrying the CVM code each figure came from |
| dividendos | Cash distributions, annual summary and 12-month dividend yield |
| scores | Piotroski F-Score with all nine criteria shown, plus the Graham test |
| reapresentacoes | Restated filings — the original and the revised figure side by side |
| trimestres | Quarterly series: Q1/Q2/Q3 accounts as filed, the quarter's price, margins and trailing ROE |
| etfs_ranking | B3 ETFs: most traded, largest net assets, largest premium/discount to same-day NAV, 12m NAV return, lowest EFFECTIVE fee |
| etf | One ETF: daily NAV (FNET filing), premium/discount, monthly effective fee, portfolio (CDA) and overlap with peers |
| auditar_amostra | Draws cases with YOUR seed so you can recompute each figure against the CVM file (formula, account, where to look) |
| fiis_ranking | Most discounted FIIs (point-in-time P/B), highest 12m yield and medians by segment |
| hoje | What changed in the last 30 days: filings published, filings re-sent, dividends, fund distributions, corporate actions, ticker changes |
| fii | One real-estate fund: point-in-time P/B, 12-month yield, vacancy, recent distributions |
| fiis | Filters funds by P/B and dividend-yield ranges |
| screener | Filters the whole market by indicator ranges; as_of answers what was PUBLIC on a date (no look-ahead); recibo=True freezes the answer at a permanent, citable… |
| recibo | Reads a frozen screener query: question, cut-off date, data version, result and its sha256 |
| veredito | Descriptive summary of one stock: six numbers in three questions, each with its numeric band and comparison (sector median, the company's own history, the… |
| dicionario | Formula, CVM accounts and earnings base of each indicator, as JSON |
| metodologia | The published methodology pages, as text |
| saude | Current coverage and last ingestion |
{
"mcpServers": {
"dados-b3": {
"command": "python",
"args": [
"server.py"
],
"env": {
"DADOS_B3_API_KEY": "YOUR_DADOS_B3_API_KEY"
}
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
| Variable | Description | Required |
|---|---|---|
| DADOS_B3_API_KEY | Declared in the maintainer’s client configuration. | Optional |
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