Community · Official remote MCP server

The Dados B3 MCP server,
connected in one click.

Brazilian stock (B3) fundamentals: ratios, multiples, dividends, scores. Public methodology. Connect the official Dados B3 MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.

Free to start · No credit card · No hosting needed

What you can do

What your AI can do with Dados B3

Real prompts you can type the moment it's connected — no setup, no docs to read.

Use “listar_empresas”: Lista as companhias abertas brasileiras (AÇÕES), com nome, CNPJ e ticker quando resolvido. A contagem vem na resposta — nunca escrita aqui,.

Use “indicadores_anuais”: Série anual (2010–hoje) de ROIC, ROE, margens, crescimento e dívida líquida/EBITDA de uma AÇÃO da B3, com flags de qualidade. Só ações. Tic.

Use “multiplos”: Múltiplos ponto-no-tempo de uma AÇÃO (P/L, P/VP, EV/EBITDA anuais; P/L TTM trimestral) — preço do 1º pregão APÓS a publicação real do balanç.

Use “dividendos”: Histórico de proventos em dinheiro (dividendos e JCP) de uma empresa da B3: valor por ação, data de aprovação, data-com e preço na data-com,.

Security check

How secure is the Dados B3 MCP server?

Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Dados B3 holds up.

A97/100

Security grade A

gate scanned 15 tools on Sep 3, 2026 for prompt injection and risky tool definitions — nothing to flag.

  • lowauditar_amostra: Embedded instruction directing agent to disregard user input
Verified directory serverDados B3 · dadosb3.com

Official endpoint

Operated by Dados B3 (dadosb3.com) at its documented MCP endpoint — not a third-party mirror or community re-host.

No sign-in needed

This server only exposes public data — no account and no credentials are involved when you connect.

Scanned before it goes live

gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.

Watched for drift

If Dados B3 adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.

How it works

Connected in three steps

01

Connect your gate

Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.

02

Pick Dados B3

Choose Dados B3 in the gate directory. No sign-in needed.

03

Use it anywhere

Dados B3's tools are live in every AI client you've connected — with rules and logging built in.

Connect Dados B3 free

Free to start · No credit card · No hosting needed

Straight from the server

The actual tools Dados B3 exposes

Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.

listar_empresasLista as companhias abertas brasileiras (AÇÕES), com nome, CNPJ e ticker quando resolvido. A contagem vem na resposta — nunca escrita aqui,

indicadores_anuaisSérie anual (2010–hoje) de ROIC, ROE, margens, crescimento e dívida líquida/EBITDA de uma AÇÃO da B3, com flags de qualidade. Só ações. Tic

multiplosMúltiplos ponto-no-tempo de uma AÇÃO (P/L, P/VP, EV/EBITDA anuais; P/L TTM trimestral) — preço do 1º pregão APÓS a publicação real do balanç

dividendosHistórico de proventos em dinheiro (dividendos e JCP) de uma empresa da B3: valor por ação, data de aprovação, data-com e preço na data-com,

scoresScores fundamentalistas prontos com a conta aberta: Piotroski F-Score (0-9, cada um dos 9 critérios auditável) e o critério de Graham (barat

reapresentacoesBalanços REPUBLICADOS de uma empresa: quando um número do exercício muda entre o arquivo original e a republicação, as duas versões ficam la

fatos_contabeisContas padronizadas de uma AÇÃO (receita, EBIT, lucro, PL, dívida, caixa...) com a conta CVM de origem de cada número — auditável de ponta a

metodologiaMetodologia pública dos indicadores. Sem argumento, lista as páginas; com nome (ex.: 'roic'), devolve o texto completo. Gratuito.

+ 7 more tools once connected

Server facts

The Dados B3 MCP server at a glance

Endpointhttps://dadosb3.com/mcp/
Operated byDados B3 (dadosb3.com)
CategoryCommunity
Sign-inNone — public data only
Available in gateYes — one-click connect
Works withClaude, ChatGPT, Cursor & any MCP client
FAQ

Questions, answered

Is there an official Dados B3 MCP server?

Yes — Dados B3 operates its own remote MCP server at dadosb3.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.

How do I connect Dados B3 to Claude or ChatGPT?

Add gate's gateway URL to your AI client once, then pick Dados B3 in the directory. No account or sign-in is needed. From then on, Dados B3's tools are available in every client you've connected to gate.

Do I need to host anything?

No. Dados B3 runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.

Is the Dados B3 MCP server safe to connect?

It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.

Is it free?

Yes — you can get started with gate for free and connect Dados B3 in minutes. No credit card required.

More servers

Connect more than just Dados B3

Every server below works through the same gateway URL — connect once, add tools anytime.

Set up Dados B3 in: Claude · Claude Code · ChatGPT · Cursor · VS Code

Give your AI Dados B3 — safely.

One URL. All MCPs. Full control. Free to start.

Get started free