# br-eli-mcp

<!-- mcp-name: io.github.matematicsolutions/br-eli-mcp -->

MCP server for eight keyless, no-registration Brazilian open-data APIs:

1. **Camara dos Deputados** (`dadosabertos.camara.leg.br`) - the federal legislative
   *process*: bills (proposicoes) as they move through committees and floor votes.
2. **Congresso Nacional Dados Abertos Legislativos** (`legis.senado.leg.br/dadosabertos`) -
   the real LexML URN Lex resolver for enacted Normas Juridicas (laws, decrees,
   constitutional amendments): identification, Diario Oficial da Uniao publication
   provenance, amendment history, STF unconstitutionality notes.
3. **normas.leg.br** - the full-text companion to (2): real article-by-article text of
   enacted legislation, addressed by the same URN Lex.
4. **DataJud CNJ** (`api-publica.datajud.cnj.jus.br`) - court DOCKET metadata (not
   ruling text) across STJ/TST/TSE/TRFs/TJs/TRTs/TREs and military courts.
5. **STJ Open Data Portal** (`dadosabertos.web.stj.jus.br`) - real acordao (ruling)
   full text + ementa (headnote) from the Superior Tribunal de Justica, Brazil's
   second-highest court. Coverage starts May 2022.
6. **CARF** (`acordaos.economia.gov.br`) - real acordao (tax ruling) full text from
   Brazil's federal tax appeals board, by exact docket/decision number.
7. **TST** (`jurisprudencia-backend2.tst.jus.br`) - real ruling full text (inteiro
   teor) + ementa from the Tribunal Superior do Trabalho, Brazil's labor supreme
   court: free-text search and exact CNJ-process-number lookup (3,751,594 acordaos,
   8,483,448 documents across all types - verified live 2026-07-07).
8. **TCU** (`pesquisa.apps.tcu.gov.br`) - real acordao full text (deliberation,
   rapporteur's report, vote) from the Tribunal de Contas da Uniao, the Federal
   Court of Accounts - public-procurement jurisprudence (525,620 acordaos -
   verified live 2026-07-07).

## What this is (and isn't)

`br_get_norma` resolves a `urn:lex:br:...` against the Senado's own API gateway
(public, no key or registration) and returns identification, publication provenance,
and amendment history. `br_get_norma_index` + `br_get_norma_texto` resolve the same
URN against `normas.leg.br`'s structured Legislation tree for the real text of one
article - not a summary. See [DISCOVERY.md](DISCOVERY.md) for how both endpoints were
found: v0.1.0 tested the wrong host for identification and wrongly reported it as
unconfirmed; v0.2.0 fixed that but still lacked full text; v0.3.0 found the
full-text API on the same domain as the human-readable citation page.

This connector does not scrape Planalto (planalto.gov.br) HTML - no confirmed
mechanical rule maps a URN Lex to a Planalto URL for every act type, and fabricating
one would risk the citation-hallucination failure mode this fleet exists to prevent.
Re-verified live 2026-07-07: `legislacao.presidencia.gov.br` (the REFLEGIS portal
the manifest names) does not return a plain HTTP response to a keyless client at
all - the connection is accepted but the request times out with zero bytes
received, consistent with a bot-challenge/WAF in front of it, not a structured API.
A minority of act types (mostly decrees) have no inline text in `normas.leg.br`
either; for those, see [DISCOVERY.md](DISCOVERY.md).

For case law, DataJud (docket metadata only, redistribution restricted by CNJ
Resolution 446/2022), the STJ Open Data Portal (real acordao text, May 2022+),
CARF (real tax-ruling text, exact lookup only), TST (real ruling text - free-text
search and exact CNJ-process-number lookup, both confirmed live 2026-07-07 after
a browser network trace of the real frontend revealed the request fields the
earlier reverse-engineering missed) and TCU (real acordao/relatorio/voto text)
are wired in below. TRF4/TRF5 were probed and rejected - their hosts never accept
a connection from outside Brazil (`geo_restricted`) - and RFB's sijut2consulta is
a scrape-class HTML app with no JSON backend. See [DISCOVERY.md](DISCOVERY.md)
for the exact probes run and each confirmed request/response contract.

## Tools

| Tool | Purpose |
|---|---|
| `br_search_proposicoes` | List bills by type (`PL`, `PLP`, `PEC`, ...) and year |
| `br_get_proposicao` | Full detail + current status for one bill by id |
| `br_get_norma` | Resolve an enacted Norma Juridica by URN Lex - identification, DOU provenance, amendment history, STF notes |
| `br_get_norma_index` | List the addressable structure of a Norma (parts, books, titles, chapters, sections, articles) |
| `br_get_norma_texto` | Fetch the real text of one article (dispositivo) of a Norma |
| `br_search_processos` | Search court dockets (metadata only) in one tribunal's DataJud CNJ index |
| `br_get_processo` | Fetch one court docket by exact CNJ unified process number |
| `br_search_case_stj` | Search STJ acordaos (real ruling text) by process number or free text |
| `br_get_case_stj` | Fetch one STJ acordao by exact process number - ementa + ruling body text |
| `br_get_case_carf` | Fetch one CARF tax acordao by exact docket or decision number - ementa + ruling body text |
| `br_search_case_tst` | Search TST labor-court rulings by free text (real ruling text; 3.75M acordaos) |
| `br_get_case_tst` | Fetch one TST ruling by exact CNJ unified process number - ementa + inteiro teor |
| `br_search_case_tcu` | Search TCU (Federal Court of Accounts) acordaos by free text (525K acordaos) |
| `br_get_case_tcu` | Fetch one TCU acordao by (numero, ano, colegiado) - deliberation + report + vote text |
| `br_coverage` | Declare what this connector covers, when each family was captured, and - explicitly - what it does NOT cover. Every gap carries a fallback. |

Bill type codes (`sigla_tipo`), for reference:

| Code | Portuguese | English |
|---|---|---|
| `PL` | Projeto de Lei | ordinary bill |
| `PLP` | Projeto de Lei Complementar | complementary-law bill (implements a constitutional provision) |
| `PEC` | Proposta de Emenda a Constituicao | constitutional amendment proposal |

Every response carries `lex_uri`, `human_readable_citation` and `source_url`.
For `br_search_proposicoes`/`br_get_proposicao`, `lex_uri` is Camara's own stable
API URI (not a URN Lex - a bill isn't enacted law yet). For `br_get_norma`,
`lex_uri` is the real `urn:lex:br:...` you queried with, e.g.
`"urn:lex:br:federal:lei:2002-01-10;10406"` (Codigo Civil). For `br_get_norma_texto`,
`lex_uri` is that URN plus the article suffix, e.g. `"...;10406!art5"`.

## Install

As a Claude plugin (Claude Code or the desktop app, needs [uv](https://docs.astral.sh/uv/)):

```
/plugin marketplace add matematicsolutions/br-eli-mcp
/plugin install br-eli-mcp@br-eli-mcp
```

As a plain Python package:

```bash
pip install br-eli-mcp
```


### Windows 11 with Smart App Control

Smart App Control blocks unsigned executables, which covers `uvx.exe`, `pip.exe`
and the `br-eli-mcp.exe` launcher that pip writes at install time. The `python.exe` and
`py.exe` from the python.org installer are signed by the Python Software
Foundation, so running the module through the interpreter works:

```bash
python -m pip install br-eli-mcp
python -m br_eli_mcp
```

`pip.exe` is blocked for the same reason, so install with `python -m pip`, not
`pip install`. If `python` is not on PATH, use the Windows launcher: `py -3 -m br_eli_mcp`.

```json
{ "mcpServers": { "br-eli-mcp": { "command": "python", "args": ["-m", "br_eli_mcp"] } } }
```

Do not turn Smart App Control off to work around this - it cannot be re-enabled
without reinstalling Windows.

## Configuration

| Env var | Default |
|---|---|
| `BR_ELI_CACHE_DIR` | `~/.matematic/cache/br-eli` |
| `BR_ELI_AUDIT_DIR` | `~/.matematic/audit` |
| `BR_ELI_BASE_URL` | `https://dadosabertos.camara.leg.br/api/v2` |
| `BR_ELI_NORMA_BASE_URL` | `https://legis.senado.leg.br/dadosabertos` |
| `BR_ELI_TEXT_BASE_URL` | `https://normas.leg.br/api/public` |
| `BR_ELI_DATAJUD_BASE_URL` | `https://api-publica.datajud.cnj.jus.br` |
| `BR_ELI_STJ_BASE_URL` | `https://dadosabertos.web.stj.jus.br` |
| `BR_ELI_CARF_BASE_URL` | `https://acordaos.economia.gov.br/solr/acordaos2/select` |
| `BR_ELI_TST_BASE_URL` | `https://jurisprudencia-backend2.tst.jus.br` |
| `BR_ELI_TCU_BASE_URL` | `https://pesquisa.apps.tcu.gov.br/rest/publico/base/acordao-completo` |

## Data

The server runs on your machine. Each tool call sends your query to the official
Brazilian public API it names above (Camara, Senado, normas.leg.br, DataJud CNJ, STJ,
TST, TCU or CARF); nothing goes to MateMatic. Your query and the results also pass
through whatever model you use, the same way as any other message.

Once, on first use, the standalone server also fetches a small configuration file
(`br-runtime.json.gz`, updated source addresses) from this repository's GitHub Releases.
That request carries no query content; GitHub's download counter for the file is the only
usage signal we see. `BR_ELI_RUNTIME_URL=""` turns it off, and the Claude plugin ships
with it off.

Two things are written locally, in your home directory:

- a response cache (`~/.matematic/cache/br-eli`), so a repeated lookup does not hit
  the source again. Court rulings are public records and can name the parties.
- an audit log (`~/.matematic/audit/br-eli-mcp.jsonl`), one line per tool call: the
  tool name, a SHA-256 hash of the input (not the input itself), result size, time
  and status.

Delete either folder at any time; `BR_ELI_CACHE_DIR` and `BR_ELI_AUDIT_DIR` move them.

## License

Apache-2.0 (code). The Camara dos Deputados open-data API is open data
requiring attribution - see [SOURCES.md](SOURCES.md).