Lottery (Brazil)

Caixa Econômica Federal lottery draws as MCP tools for Claude. Mega Sena, Lotofácil, Quina, Lotomania, and Dupla Sena. Every draw is fetched from Caixa’s public API, fingerprinted, and signed by signed-data.org.

Endpoint: https://lottery.mcp.signed-data.org/mcp Domain spec: lottery.brazil

Quick start

Add to your Claude Desktop config (~/.config/claude/claude_desktop_config.json):

{
  "mcpServers": {
    "signeddata-lottery": {
      "url": "https://lottery.mcp.signed-data.org/mcp"
    }
  }
}

Or test via curl:

curl -X POST https://lottery.mcp.signed-data.org/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

pip install signeddata-cds
pip install signeddata-mcp-lottery
signeddata-mcp-lottery

Then in ~/.config/claude/claude_desktop_config.json:

{
  "mcpServers": {
    "signeddata-lottery": {
      "command": "signeddata-mcp-lottery",
      "env": {
        "CDS_PRIVATE_KEY_PATH": "/path/to/keys/private.pem",
        "CDS_PUBLIC_KEY_PATH":  "/path/to/keys/public.pem",
        "CDS_ISSUER":           "signed-data.org"
      }
    }
  }
}

git clone https://github.com/signed-data/cds.git && cd cds
pip install -e sdk/python
pip install -e mcp/lottery
python mcp/lottery/server.py                          # stdio
python mcp/lottery/server.py --transport sse --port 8001  # SSE

Tools

Tool	Description
`get_mega_sena_latest`	Latest draw — numbers, prizes, acumulado
`get_mega_sena_by_concurso`	Specific draw by number
`get_mega_sena_recent`	Last N draws (up to 20)
`check_mega_sena_ticket`	Check if a set of numbers won
`get_mega_sena_statistics`	Frequency analysis over the last N draws

Resources

URI	Description
`lottery://mega-sena/latest`	Latest result as JSON
`lottery://mega-sena/schema`	CDS content type + payload schema

Games

Game	Numbers	Draws	Content type
Mega Sena	6 from 1–60	Wed, Sat	`vocab/lottery-brazil/mega-sena-result`
Lotofácil	15 from 1–25	Mon–Fri	`vocab/lottery-brazil/lotofacil-result`
Quina	5 from 1–80	Mon–Fri	`vocab/lottery-brazil/quina-result`
Lotomania	20 of 100	Mon, Wed, Fri	`vocab/lottery-brazil/lotomania-result`
Dupla Sena	2 × 6 from 1–50	Mon, Fri	`vocab/lottery-brazil/dupla-sena-result`

Data source

Official Caixa Econômica Federal API — no authentication required.

GET https://servicebus2.caixa.gov.br/portaldeloterias/api/megasena/
GET https://servicebus2.caixa.gov.br/portaldeloterias/api/megasena/{concurso}

Environment variables

Variable	Description	Default
`CDS_PRIVATE_KEY_PATH`	Path to RSA private key for signing	(unsigned if not set)
`CDS_PUBLIC_KEY_PATH`	Path to RSA public key for verification	(skip verification)
`CDS_ISSUER`	Issuer URI in signed events	`signed-data.org`