Dados B3

MCP server · by Val7h

Developer Tools DockerStreamable HTTP v1.9.3

Brazilian stocks (B3): 36 read-only tools. Fundamentals, dividends, FIIs, ETFs. Most need no key.

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version unavailable — the image reference already carries a tag

Docker
docker run -i --rm ghcr.io/val7h/dados-b3-mcp:1.9.3

Streamable HTTP
https://dadosb3.com/mcp/

Setup by client

Pick your client — the config below is generated for this server (both local and hosted-endpoint forms). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/val7h/dados-b3-mcp:1.9.3"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<YOUR_DADOS_B3_API_KEY>"
      }
    }
  }
}

Remote (hosted) endpoint

https://dadosb3.com/mcp/

Claude Desktop: Settings → Connectors → Add custom connector, paste this URL.

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env DADOS_B3_API_KEY=<YOUR_DADOS_B3_API_KEY> dados-b3 -- docker run -i --rm ghcr.io/val7h/dados-b3-mcp:1.9.3

terminal

claude mcp add --transport http dados-b3 https://dadosb3.com/mcp/

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/val7h/dados-b3-mcp:1.9.3"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<YOUR_DADOS_B3_API_KEY>"
      }
    }
  }
}

.cursor/mcp.json (hosted endpoint)

{
  "mcpServers": {
    "dados-b3": {
      "url": "https://dadosb3.com/mcp/"
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/val7h/dados-b3-mcp:1.9.3"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<YOUR_DADOS_B3_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json (hosted endpoint)

{
  "servers": {
    "dados-b3": {
      "type": "http",
      "url": "https://dadosb3.com/mcp/"
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/val7h/dados-b3-mcp:1.9.3"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<YOUR_DADOS_B3_API_KEY>"
      }
    }
  }
}

mcp_config.json (hosted endpoint)

{
  "mcpServers": {
    "dados-b3": {
      "serverUrl": "https://dadosb3.com/mcp/"
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

DADOS_B3_API_KEY secret — Dados B3 API key. Optional: without one, any ticker answers in annual indicators, multiples, CVM accounts, dividends and FIIs (60/hour, 150/day per IP; AI assistants 2,000/hour). A free key (200 queries/day, no card) or

GitHub

最近更新于 31 天前 · MIT license

About this server

Dados B3 — MCP server (Brazilian stock market, auditable fundamentals) 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 publishe…

Summary from the project README — github.com/Val7h/dados-b3-mcp

Distributed as Docker, Streamable HTTP, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the Dados B3 MCP server do?

How do I install Dados B3?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Dados B3 free to use?

The MCP server itself is free to install. The source is public on https://github.com/Val7h/dados-b3-mcp. Any third-party service it calls may require its own API key and account.

Which clients support Dados B3?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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