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Val7h/dados-b3-mcp

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Auditable fundamentals for 400+ Brazilian stock market (B3) companies including banks and insurers: ROE, point-in-time P/E & P/B, dividends and dividend yield,

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Описание

Auditable fundamentals for 400+ Brazilian stock market (B3) companies including banks and insurers: ROE, point-in-time P/E & P/B, dividends and dividend yield, Piotroski F-Score and Graham, and balance-sheet restatement history — plus Brazilian real-estate funds (FIIs) with point-in-time P/BV, dividend yield and vacancy. 100% public methodology, every number traceable to its CVM source; nothing published unless an invariant test suite passes. Free tier (200 req/day, no card). Remote: https://dadosb3.com/mcp/.

README

Português abaixo

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 fully published methodology: ROE, ROIC, margins, growth, net debt/EBITDA, point-in-time multiples (P/E, P/B, EV/EBITDA priced at the first trading session on or after the day the filing actually became public — no look-ahead, usable for backtests), dividends and dividend yield, ready-made scores (Piotroski F-Score and Graham) and a record of restated filings.

Sources: CVM open data (ODbL) and B3 (COTAHIST). Every figure carries the CVM account it came from, and nothing is published unless a suite of invariant tests passes — the balance sheet balances, the income statement reconciles, and a price never precedes the filing that justifies it.

Product and plans: https://dadosb3.com

Use 1 — remote (nothing to install, recommended)

Add this remote connector to your AI client:

https://dadosb3.com/mcp/

In Claude: Settings → Connectors → add custom connector → paste the URL.

Use 2 — local (stdio)

pip install -r requirements.txt
python server.py
{
  "mcpServers": {
    "dados-b3": {
      "command": "python",
      "args": ["server.py"],
      "env": { "DADOS_B3_API_KEY": "your_optional_key" }
    }
  }
}

Use 3 — Docker image (one command, no local Python)

docker run -i --rm -e DADOS_B3_API_KEY=your_optional_key ghcr.io/val7h/dados-b3-mcp:latest
{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "ghcr.io/val7h/dados-b3-mcp:latest"]
    }
  }
}

The image is published on every push to main (.github/workflows/publicar-imagem.yml). It exists for two reasons: a one-command install path, and letting MCP directories actually run the server in order to evaluate it.

Tools

Tool What it does Free?
listar_empresas Every covered company (name, tax ID, ticker), banks and insurers included yes
indicadores_anuais ROE, ROIC, margins, growth, net debt/EBITDA — annual series from 2010 WEGE3 yes; others need a key
multiplos P/E, P/B, EV/EBITDA point-in-time; trailing P/E WEGE3 yes; others need a key
fatos_contabeis Standardised accounts carrying the CVM code each figure came from WEGE3 yes; others need a key
dividendos Cash distributions, annual summary and 12-month dividend yield WEGE3 yes; others need a key
scores Piotroski F-Score with all nine criteria shown, plus the Graham test WEGE3 yes; others need a key
reapresentacoes Restated filings — the original and the revised figure side by side WEGE3 yes; others need a key
trimestres Quarterly series: Q1/Q2/Q3 accounts as filed, the quarter's price, margins and trailing ROE WEGE3 yes; others need a key
hoje What changed in the last 30 days: filings published, filings re-sent, dividends, fund distributions, corporate actions, ticker changes yes
fii One real-estate fund: point-in-time P/B, 12-month yield, vacancy, recent distributions MXRF11 yes; others need a key
fiis Filters funds by P/B and dividend-yield ranges key required
screener Filters the whole market by indicator ranges key required
dicionario Formula, CVM accounts and earnings base of each indicator, as JSON yes
metodologia The published methodology pages, as text yes
saude Current coverage and last ingestion yes

trimestres stops at Q3 on purpose. The interim filing (ITR) never carries a standalone fourth quarter — it can be derived as full year − nine months, and some do derive it. We do not: a figure we computed would sit in the same list as the figures the company reported, carrying the error of two filings and erasing the line between what was filed and what we calculated. For the closed year, ask for the annual series.

WEGE3 and the whole methodology are open, no key needed. For other companies, create a free key (200 queries/day, no card) or subscribe to Pro at https://dadosb3.com, and pass it in the chave_api argument or the DADOS_B3_API_KEY environment variable.

The company count is deliberately not written here: the universe grows whenever the CVM publishes, and a number frozen in a README ages without anyone noticing. Call saude for today's figure.

Banks and insurers

Financial institutions file under a different chart of accounts — there is no EBIT and no sales revenue. The connector classifies them by their actual chart of accounts and returns the indicators that mean something for them — ROE, margin, growth, P/E, P/B, dividends — and deliberately does not publish ROIC, EBITDA or EV/EBITDA for them, because those do not apply. Examples: Itaú, Bradesco, Banco do Brasil, BB Seguridade, IRB.

Why this one

A methodology published rather than described, invariant tests gating every release, multiples with no future information leaking in, and restatements kept on the record — when a company republishes a filing, both versions stay side by side. An honest comparison, including where competitors are better: https://dadosb3.com/comparativo

Licence

MIT (this connector). The underlying data is public (CVM/B3); the service adds standardisation, methodology and tests.


Dados B3 — servidor MCP (bolsa brasileira, fundamentos auditáveis)

Conector MCP que dá ao seu agente de IA (Claude, ChatGPT, Cursor e outros) acesso a dados fundamentalistas das companhias abertas brasileiras (B3) — inclusive bancos e seguradoras —, de 2010 até hoje, com metodologia 100% pública: ROE, ROIC, margens, crescimento, dívida líquida/EBITDA, múltiplos ponto-no-tempo (P/L, P/VP, EV/EBITDA com o preço do 1º pregão a partir da publicação real do balanço — sem look-ahead, próprio para backtest), dividendos e dividend yield, scores prontos (Piotroski F-Score e Graham) e histórico de reapresentações de balanço.

Fonte: CVM (dados abertos, ODbL) e B3 (COTAHIST). Cada número carrega a conta CVM de origem; nada é publicado sem uma bateria de testes de invariantes passando (o balanço fecha, a DRE fecha, o preço nunca antecede a publicação).

Produto e planos: https://dadosb3.com

Uso 1 — remoto (nada para instalar, recomendado)

Adicione este conector remoto ao seu cliente de IA:

https://dadosb3.com/mcp/

No Claude: Configurações → Conectores → adicionar conector personalizado → cole a URL.

Uso 2 — local (stdio)

pip install -r requirements.txt
python server.py

Uso 3 — imagem Docker (um comando, sem Python local)

docker run -i --rm -e DADOS_B3_API_KEY=sua_chave_opcional ghcr.io/val7h/dados-b3-mcp:latest

A imagem é publicada a cada push na main. Ela existe por dois motivos: dar um caminho de instalação de um comando só, e permitir que diretórios de MCP rodem o servidor para avaliá-lo.

Ferramentas

Ferramenta O que faz Grátis?
listar_empresas Todas as companhias cobertas (nome, CNPJ, ticker), incl. bancos e seguradoras sim
indicadores_anuais ROE, ROIC, margens, crescimento, DL/EBITDA — série anual desde 2010 WEGE3 sim; demais com chave
multiplos P/L, P/VP, EV/EBITDA ponto-no-tempo; P/L TTM WEGE3 sim; demais com chave
fatos_contabeis Contas padronizadas com a conta CVM de origem de cada número WEGE3 sim; demais com chave
dividendos Proventos, resumo anual e dividend yield de 12 meses WEGE3 sim; demais com chave
scores Piotroski F-Score com os nove critérios abertos, e o critério de Graham WEGE3 sim; demais com chave
reapresentacoes Balanços republicados — versão original e revisada lado a lado WEGE3 sim; demais com chave
trimestres Série trimestral: contas do 1T/2T/3T como publicadas, preço do trimestre, margens e ROE TTM WEGE3 sim; demais com chave
hoje O que mudou nos últimos 30 dias: balanços publicados, balanços reenviados, proventos, rendimentos de FII, eventos societários, trocas de ticker sim
fii Um fundo imobiliário: P/VP ponto-no-tempo, DY de 12 meses, vacância, rendimentos recentes MXRF11 sim; demais com chave
fiis Filtra fundos por faixas de P/VP e dividend yield exige chave
screener Filtra o mercado inteiro por faixas de indicadores exige chave
dicionario Fórmula, contas CVM e base do lucro de cada indicador, em JSON sim
metodologia As páginas de metodologia publicadas, em texto sim
saude Cobertura atual e última ingestão sim

trimestres para no 3T de propósito. A ITR nunca traz o 4º trimestre isolado — ele sai de exercício cheio − 9 meses, e há quem derive. Nós não: um número calculado por nós entraria na MESMA lista dos que a companhia reportou, carregando o erro de dois arquivos e apagando a fronteira entre "foi publicado" e "nós calculamos". Para o ano fechado, peça a série anual.

A empresa WEGE3 e a metodologia são abertas para degustação, sem chave. Para as demais, crie uma chave grátis (200 consultas/dia, sem cartão) ou assine o Pro em https://dadosb3.com e passe a chave no argumento chave_api (ou na variável DADOS_B3_API_KEY).

A contagem de empresas não fica escrita aqui de propósito: o universo cresce quando a CVM publica, e um número congelado num README envelheceria sem ninguém ver. Para o número de hoje, chame saude.

Bancos e seguradoras

Instituições financeiras têm plano de contas próprio (não há EBIT nem receita de venda). O conector as classifica pelo plano de contas real e entrega os indicadores que fazem sentido — ROE, margem, crescimento, P/L, P/VP, dividendos — e não publica ROIC/EBITDA/EV-EBITDA para elas (não se aplicam). Ex.: Itaú, Bradesco, Banco do Brasil, BB Seguridade, IRB.

Por que este e não outro

Metodologia 100% pública, testes de invariantes antes de cada publicação, múltiplos sem vazamento de informação futura, e histórico de reapresentações registrado. Comparativo honesto, inclusive onde os concorrentes são melhores: https://dadosb3.com/comparativo

Licença

MIT (este conector). Os dados são públicos (CVM/B3); o serviço adiciona padronização, metodologia e testes.

from github.com/Val7h/dados-b3-mcp

Установка Val7h/dados-b3-mcp

У этого сервера нет опубликованного пакета — он собирается из исходников. Открой репозиторий и следуй инструкции в README.

▸ github.com/Val7h/dados-b3-mcp

FAQ

Val7h/dados-b3-mcp MCP бесплатный?

Да, Val7h/dados-b3-mcp MCP бесплатный — установка в пару кликов через Unyly без оплаты.

Нужен ли API-ключ для Val7h/dados-b3-mcp?

Нет, Val7h/dados-b3-mcp работает без API-ключей и переменных окружения.

Val7h/dados-b3-mcp — hosted или self-hosted?

Self-hosted: сервер запускается локально на твоей машине командой из раздела установки.

Как установить Val7h/dados-b3-mcp в Claude Desktop, Claude Code или Cursor?

Открой Val7h/dados-b3-mcp на unyly.org, выбери вкладку своего клиента (Claude Desktop, Claude Code, Cursor) и нажми Install — конфиг сгенерируется автоматически, без правки JSON.

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