senado-br-mcp-cloudflare

# Senado Brasil MCP Server

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🇧🇷 [Leia em Português](LEIA-ME.md)

A **public, hosted** MCP server that gives AI assistants live, structured access to **Brazilian Senate open data** — **no installation, no account, no API key**. Point your MCP client at the hosted endpoint and start asking about senators, bills, votes, expenses, and more. It runs on Cloudflare Workers over Streamable HTTP.

It exposes **69 tools**, **4 prompts**, and **5 resources** across two domains:

- **Legislative** — senators; bills and their tramitation; votes; committees; plenary sessions, results and presidential vetoes; party-bloc voting orientation; speeches and stenographic transcripts; blocs and leadership; federal legislation; and citizen participation via the e-Cidadania portal.
- **Administrative** — CEAPS parliamentary-quota expenses; housing allowance; civil servants and payroll; overtime; interns; procurement contracts and biddings; outsourced staff; petty-cash funds; and budget execution.

Data comes from three official sources — the [legislative open-data API](https://legis.senado.leg.br/dadosabertos/), the [administrative open-data API](https://adm.senado.gov.br/adm-dadosabertos/swagger-ui/index.html), and the e-Cidadania portal. All tool responses are in Portuguese (pt-BR). See [CHANGELOG.md](CHANGELOG.md) for release history.

## See it in action

Point a client at the endpoint and ask in plain language — English or Portuguese:

- *"How did São Paulo's senators vote in the most recent floor votes?"* → `senado_search_votacoes`
- *"Show the legislative progress of PEC 45/2019 (a constitutional amendment proposal)."* → `senado_buscar_materias` + `senado_obter_materia`
- *"How much was spent on the CEAPS parliamentary allowance in 2024, broken down by expense type?"* → `senado_ceaps`

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

## Compared with the alternatives

Other Brazilian MCP servers also touch the Senate — [mcp-brasil](https://github.com/Mcp-Brasil/mcp-brasil) and [mcp-dados-br](https://github.com/lucianoon/mcp-dados-br) are multi-source aggregators in which the Senate is one source among many. The difference is coverage and how you run it. Measured in each one's source code on 2026-10-11:

| | Senate tools | Covers | Where it runs |
| --- | --- | --- | --- |
| **senado-br-mcp** (this) | 69 | legislative, administrative (CEAPS, staff, contracts, budget) and e-Cidadania, with provenance on every answer | hosted, no install or key; or `npx` |
| [mcp-brasil](https://github.com/Mcp-Brasil/mcp-brasil) 0.14.0 | 26 | legislative (senators, bills, floor votes, committees, agenda) — plus dozens of other government sources | local or self-hosted (Python) |
| [mcp-dados-br](https://github.com/lucianoon/mcp-dados-br) 0.6.0 | 3 | sitting senators, bill list, vote tally — plus IBGE, BCB, INMET, Chamber of Deputies | local (Python) |

**Pick an aggregator** when the question crosses the Senate with the Chamber of Deputies, the electoral court (TSE) or the Transparency Portal. **Pick this server** for expenses (CEAPS), staff, contracts, budget, speeches, committee votes, vetoes or e-Cidadania — areas the others don't cover. Full per-area table, side-by-side examples and how to re-measure (in Portuguese): [`docs/comparativo-alternativas.md`](https://github.com/SidneyBissoli/senado-br-mcp-cloudflare/blob/master/docs/comparativo-alternativas.md).

## Use it (hosted — no setup)

This is a **remote, hosted, open-access** server. To use it, point any MCP client at the Streamable
HTTP endpoint — **no install, no account, no API key, no configuration**:

```
https://senado.sidneybissoli.com/mcp
```

### OpenAI / ChatGPT app surface

For OpenAI Apps SDK submission and review, the Worker also exposes a curated MCP surface:

```
https://senado.sidneybissoli.com/mcp/openai-app-v2
```

This endpoint intentionally keeps the full public MCP server intact at `/mcp`, but limits tool discovery
to 27 high-signal, intent-oriented tools for ChatGPT app use. `/mcp/openai-app` remains available as a
legacy alias, but new ChatGPT app configurations should use `/mcp/openai-app-v2` so clients fetch the
current tool schema. The tools still call the same handlers and return the same provenance envelope; only
the advertised surface is narrower. Any ChatGPT app listing should present this as an independent open-data
research app, not as an official Senate, OpenAI or ChatGPT connector.

For ChatGPT Apps, those 27 tools also advertise a shared MCP Apps UI template at
`ui://senado-br-mcp/openai-app-dashboard-v2.html`. The self-contained widget renders the returned
`structuredContent` as a compact dashboard with metrics, main records, and source/provenance, without
adding another model-visible data tool.

Public legal URLs for app review:

- Privacy policy: `https://senado.sidneybissoli.com/privacy`
- Terms of use: `https://senado.sidneybissoli.com/terms`

### ChatGPT (Deep Research)

ChatGPT deep research (and company knowledge, and research workflows over the Responses API) only uses an MCP server that exposes exactly `search` and `fetch` — this server does, on top of the `senado_*` tools, on the full `/mcp` surface (not on the curated app profile). Point the connector at the hosted endpoint, no key required:

```
https://senado.sidneybissoli.com/mcp
```

`search` ranks the query against the senators in office and the active committees of the Senate and the National Congress and returns `{ id, title, url }` (`sen:<código>` / `com:<código>`); `fetch` returns the document as readable Markdown — the senator's biography and mandates, or the committee's summary and board — with the canonical public page (the senator's profile on www25.senado.leg.br or the committee page on legis.senado.leg.br), which is what ChatGPT cites. Both carry the same provenance block as every other tool, in `structuredContent` and `_meta` (the text channel is the contract's JSON). In ChatGPT's developer mode (Settings → Security and login → Developer mode) any tool is callable — the `senado_*` tools remain the ones to use for data.

### Install (any client)

For clients that launch MCP servers as a command — and for one-command setup — use the
[`mcp-remote`](https://www.npmjs.com/package/mcp-remote) bridge. **No build, no config, no key:**

```bash
npx -y mcp-remote https://senado.sidneybissoli.com/mcp
```

- **One-click (LobeHub):** open the [server page](https://lobehub.com/mcp/sidneybissoli-senado-br-mcp-cloudflare) and click **Install**.
- **Native remote URL** (Claude Desktop/Code and other Streamable-HTTP clients): see [Connecting MCP Clients](#connecting-mcp-clients).

Everything below *Architecture* (Prerequisites, Setup, Deploy) is **only for optionally self-hosting your
own instance** — it is **not** required to use this public server.

## Run locally (npx · stdio)

Prefer not to route queries through a third-party host (e.g. a newsroom policy)? The **same server**
also runs as a **local stdio process** that talks **directly to the official government APIs** — same
69 tools, same provenance envelope, no Cloudflare in the loop. This is the npm/stdio channel, published
as [`senado-br-mcp`](https://www.npmjs.com/package/senado-br-mcp).

Point a command-based client (Claude Desktop/Code, etc.) at the package — npm fetches and runs it,
no clone or build:

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

To run it directly or hack on it, use the source checkout instead:

```bash
git clone https://github.com/SidneyBissoli/senado-br-mcp-cloudflare
cd senado-br-mcp-cloudflare
npm install
npm run build
node dist/cli.js   # serves MCP over stdio (Ctrl+C to stop)
```

**Parity with the hosted server:** the legislative and administrative tools are **identical** (same
upstream APIs, same throttle/cache/provenance) — locally the L1 Cloudflare cache is a no-op, but the L0
in-memory cache still works, so results are the same. The **only** difference is the e-Cidadania
list/corpus tools: without D1 they fall back to a live scrap