io.github.SidneyBissoli/senado-br-mcp

Officialdeprecated

by SidneyBissoli · HTML

MCP Server for Brazilian Federal Senate open data (legislators, bills, votes)

Access Brazilian Federal Senate open data on legislators, bills, and voting records.

⚠️ Deprecated — this repository has moved

This server is no longer maintained here. The Brazilian Senate MCP server now lives at senado-br-mcp-cloudflare — 66 tools with level-1 provenance, available both hosted (https://senado.sidneybissoli.com/mcp, no setup) and via npm/stdio (npx senado-br-mcp, v3.x). The npm package senado-br-mcp now publishes that server (v3.2.1+); versions < 3.0.0 here are deprecated. Please migrate — this repository is archived.

Senado Brasil MCP Server

🇧🇷 Leia em Português

MCP server for Brazilian Federal Senate open data (legislators, bills, votes, committees).

Servidor MCP (Model Context Protocol) que permite acesso estruturado aos dados abertos do Senado Federal do Brasil, democratizando o acesso a informações legislativas através de conversas com IA.

See it in action

Ask your assistant, in plain Portuguese:

"Liste os senadores de SP em exercício." → senado_listar_senadores
"Mostre a tramitação da PEC 45/2019." → senado_buscar_materias + senado_obter_materia
"Quais ideias legislativas mais apoiadas estão abertas no e-Cidadania?" → senado_ecidadania_listar_ideias

The answers come live from the Senate's official open-data APIs — real data with provenance, not numbers guessed from training data.

Features

33 tools for accessing Senate data
Real-time data from official API
e-Cidadania integration: citizen participation data via web scraping
Structured JSON responses
Error handling with actionable suggestions
TypeScript with full type safety
Two access modes: stdio (npm) and HTTP remote

Two Ways to Use

Mode	Installation	Best For
stdio/npm	`npx senado-br-mcp`	Technical users, local usage
HTTP remote	None required	Non-technical users, cloud access

Both modes provide access to the same 33 tools.

Option 1: stdio/npm (Local)

Installation

Using npx (Recommended):

bash

npx senado-br-mcp

Global Installation:

bash

npm install -g senado-br-mcp
senado-br-mcp

From Source:

bash

git clone https://github.com/SidneyBissoli/senado-br-mcp.git
cd senado-br-mcp
npm install
npm run build
npm start

Claude Desktop Configuration

Add to your claude_desktop_config.json:

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

json

{
  "mcpServers": {
    "senado-br-mcp": {
      "command": "npx",
      "args": ["-y", "senado-br-mcp"]
    }
  }
}

Option 2: HTTP Remote (Cloud)

No installation required. Connect directly via URL.

Claude Desktop Configuration

In Claude Desktop settings, go to "Add Custom Connector" and enter:

Name: senado-br-mcp
URL: https://senado-br-mcp.up.railway.app/mcp

Endpoints

Endpoint	Description
`GET /`	Server info and documentation
`GET /health`	Health check
`GET /stats`	Usage statistics
`POST /mcp`	MCP protocol endpoint

Rate Limiting

The HTTP server has a monthly request limit to stay within free tier:

Alerts are sent at 50%, 80%, and 100% usage
When limit is reached, use the npm version instead
Limit resets on the 1st of each month

Available Tools

Senators (Senadores)

Tool	Description
`senado_listar_senadores`	List senators in office or by legislature. Filters: state (UF), party
`senado_obter_senador`	Get detailed info about a senator (biography, mandates, committees)
`senado_buscar_senador_por_nome`	Search senators by name
`senado_votacoes_senador`	List how a senator voted. Filters: year, date range

Legislative Matters (Matérias)

Tool	Description
`senado_buscar_materias`	Search bills by type (PEC, PL, PLP, MPV), number, year, keyword, author
`senado_obter_materia`	Get bill details (summary, author, status, rapporteur)
`senado_tramitacao_materia`	Get bill's procedural history
`senado_textos_materia`	Get bill texts (original, substitute, final) with download URLs
`senado_votos_materia`	Get voting results for a bill

Votes (Votações)

Tool	Description
`senado_listar_votacoes`	List plenary votes by year. Filters: month, date range
`senado_obter_votacao`	Get vote details with nominal votes by senator
`senado_votacoes_recentes`	Get recent votes (last N days)

Committees (Comissões)

Tool	Description
`senado_listar_comissoes`	List committees. Filters: type (permanent, temporary, CPI), active
`senado_obter_comissao`	Get committee details (president, vice-president, purpose)
`senado_membros_comissao`	List committee members with roles
`senado_reunioes_comissao`	List committee meetings with agenda

Agenda

Tool	Description
`senado_agenda_plenario`	Get plenary session schedule with voting agenda
`senado_agenda_comissoes`	Get committee meeting schedule

Lookup/Auxiliary (Auxiliares)

Tool	Description
`senado_legislatura_atual`	Get current legislature info (number, period, dates)
`senado_tipos_materia`	List valid bill types (PEC, PL, PLP, MPV, etc.)
`senado_partidos`	List parties with senator count
`senado_ufs`	List states with senator count

e-Cidadania (Citizen Participation)

Tools for accessing e-Cidadania data - the Senate's citizen participation platform.

Public Consultations (Consultas Públicas)

Tool	Description
`senado_ecidadania_listar_consultas`	List public consultations with citizen voting on pending bills
`senado_ecidadania_obter_consulta`	Get consultation details including votes, author, and comments
`senado_ecidadania_consultas_polarizadas`	Get polarized consultations (~50/50 votes) - useful for identifying divisive issues
`senado_ecidadania_consultas_consensuais`	Get consensual consultations (>85% one way) - identifies broad agreement

Legislative Ideas (Ideias Legislativas)

Tool	Description
`senado_ecidadania_listar_ideias`	List citizen-proposed legislative ideas
`senado_ecidadania_obter_ideia`	Get idea details including full description and conversion to bill
`senado_ecidadania_ideias_populares`	Get most supported legislative ideas

Interactive Events (Eventos Interativos)

Tool	Description
`senado_ecidadania_listar_eventos`	List interactive events (hearings, confirmations, livestreams)
`senado_ecidadania_obter_evento`	Get event details including agenda, guests, and video link
`senado_ecidadania_eventos_populares`	Get events with most citizen comments and questions

Analysis Tools

Tool	Description
`senado_ecidadania_sugerir_tema_enquete`	AI-assisted analysis to suggest topics for monthly surveys based on participation metrics

Note: e-Cidadania tools use web scraping with rate limiting and caching. If the e-Cidadania website is temporarily unavailable, API tools (senators, bills, votes) remain operational.

Usage Examples

List senators from São Paulo

code

Use senado_listar_senadores with uf: "SP"

Search for Constitutional Amendments in 2024

code

Use senado_buscar_materias with sigla: "PEC", ano: 2024

Get recent votes

code

Use senado_votacoes_recentes with dias: 7

Find a senator by name

code

Use senado_buscar_senador_por_nome with nome: "Randolfe"

Get CCJ committee members

code

Use senado_membros_comissao with sigla: "CCJ"

Get polarized public consultations

code

Use senado_ecidadania_consultas_polarizadas with minimoVotos: 5000

Get most supported citizen ideas

code

Use senado_ecidadania_ideias_populares with limite: 5

Find upcoming interactive events

code

Use senado_ecidadania_listar_eventos with status: "agendado"

Response Format

All tools return structured JSON responses:

Success Response

json

{
  "success": true,
  "data": { ... },
  "metadata": {
    "fonte": "Senado Federal - Dados Abertos",
    "dataConsulta": "2024-01-15T10:30:00Z",
    "endpoint": "/senador/lista/atual"
  }
}

Error Response

json

{
  "success": false,
  "error": {
    "code": "SENADOR_NAO_ENCONTRADO",
    "message": "Senator with code 99999 was not found",
    "suggestion": "Use senado_buscar_senador_por_nome to find the correct code"
  }
}

Development

Prerequisites

Node.js 18+
npm

Setup

bash

npm install

Build

bash

# Build stdio version (npm package)
npm run build

# Build HTTP server version
npm run build:server

# Build both
npm run build:all

Development Mode

bash

# stdio mode
npm run dev

# HTTP server mode
npm run dev:server

Type Check

bash

npm run typecheck

Test with MCP Inspector

bash

npm run inspect

Self-Hosting HTTP Server

You can host your own HTTP server instance.

Local

bash

npm run build:server
npm run start:server
# Server runs on http://localhost:3000

Railway

Fork this repository
Connect Railway to your GitHub
Deploy (auto-detects configuration from railway.json)
Set environment variables:
- MONTHLY_REQUEST_LIMIT (default: 10000)
- ALERT_WEBHOOK_URL (optional, for notifications)

Environment Variables

Variable	Description	Default
`PORT`	Server port	3000
`MONTHLY_REQUEST_LIMIT`	Monthly request limit	10000
`ALERT_WEBHOOK_URL`	Webhook for alerts	-
`LOG_LEVEL`	Logging level	info

Data Sources

Official API

API: Senado Federal - Dados Abertos
Documentation: https://legis.senado.leg.br/dadosabertos/docs/
Format: JSON
Authentication: None (public data)

e-Cidadania (Web Scraping)

Website: e-Cidadania
Content: Public consultations, legislative ideas, interactive events
Method: HTML scraping with rate limiting (1 req/sec) and caching (15min-24h)
Fallback: If e-Cidadania is unavailable, API tools continue working

Bill Types (Tipos de Matéria)

Code	Name	Description
PEC	Proposta de Emenda à Constituição	Constitutional Amendment
PL	Projeto de Lei	Ordinary Law Bill
PLP	Projeto de Lei Complementar	Complementary Law Bill
MPV	Medida Provisória	Provisional Measure
PDL	Projeto de Decreto Legislativo	Legislative Decree Bill
PRS	Projeto de Resolução do Senado	Senate Resolution Bill
PLC	Projeto de Lei da Câmara	Chamber of Deputies Bill

License

MIT

Author

Sidney da Silva Pereira Bissoli

Repository

https://github.com/SidneyBissoli/senado-br-mcp

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Changelog

1.1.0

Added e-Cidadania integration (11 new tools)
Web scraping infrastructure with rate limiting and caching
Public consultations analysis (polarized/consensual)
Legislative ideas tracking
Interactive events monitoring
Survey topic suggestion tool

1.0.0

Initial release
22 tools for Senate data access
Senators, bills, votes, committees, agenda, and lookup tools

Install

claude_desktop_config.json

{
  "mcpServers": {
    "senado-br-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "senado-br-mcp@1.2.0"
      ]
    }
  }
}