Dados B3 MCP Server

by val7hio.github.Val7h/dados-b3v1.8.0

Auditable fundamentals for Brazilian B3 stocks (ROE, P/E, dividends, Piotroski, Graham, restatements) and real-estate funds (FIIs), traceable to CVM sources.

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Active2d ago

Install Dados B3 MCP server

claude mcp add dados-b3 -e DADOS_B3_API_KEY='<dados-b3-api-key>' -- docker run -i --rm -e DADOS_B3_API_KEY ghcr.io/val7h/dados-b3-mcp:1.8.0

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DADOS_B3_API_KEY",
        "ghcr.io/val7h/dados-b3-mcp:1.8.0"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<dados-b3-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DADOS_B3_API_KEY",
        "ghcr.io/val7h/dados-b3-mcp:1.8.0"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<dados-b3-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "dados-b3": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DADOS_B3_API_KEY",
        "ghcr.io/val7h/dados-b3-mcp:1.8.0"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<dados-b3-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "dados-b3": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DADOS_B3_API_KEY",
        "ghcr.io/val7h/dados-b3-mcp:1.8.0"
      ],
      "env": {
        "DADOS_B3_API_KEY": "<dados-b3-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
DADOS_B3_API_KEY	—	yes	Dados B3 API key. Optional: WEGE3 and the whole methodology are free without one. Create a free key (200 queries/day, no card) or subscribe at https://dadosb3.com.

Remote endpoints

streamable-httphttps://dadosb3.com/mcp/

Freshness

Active — last maintenance signal 2d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-08 · 2d ago · GitHub
Latest release
2026-10-08 · 2d ago · GitHub · v1.8.0
Package published
no data · npm/PyPI
Registry entry updated
2026-10-08 · 2d ago · official registry · v1.8.0

FAQ

›How do I install the Dados B3 MCP server in Claude Code?

Run: claude mcp add dados-b3 -e DADOS_B3_API_KEY='<dados-b3-api-key>' -- docker run -i --rm -e DADOS_B3_API_KEY ghcr.io/val7h/dados-b3-mcp:1.8.0. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Dados B3 require an API key?

Yes. It expects DADOS_B3_API_KEY, of which 1 is a secret.

›Can I use Dados B3 as a remote (hosted) MCP server?

Yes — it offers both a hosted endpoint and a local stdio package.

›Is Dados B3 in the official MCP registry?

Yes, as io.github.Val7h/dados-b3.