# cnpj.ia.br (remote · mcp.cnpj.ia.br)

Empresas do Brasil (CNPJ): consulta por CNPJ, busca por filtros e uso da conta.

- Trust score: 37/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-04

## Components

- remote · `mcp.cnpj.ia.br`: 37/100 (this document), [markdown](https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp.md), [page](https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp)

## Channel facts

- Endpoint: `https://mcp.cnpj.ia.br`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-04.

- **Endpoint Security**: 92/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - The endpoint enforces authorisation, advertised via RFC 9728 protected-resource metadata.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism.
- **Transport & Reachability**: 0/100
  - Transport blocked by authentication: the endpoint requires auth we don't have to verify streamable-http.
- **Schema Quality & AI Usability**: 0/100
  - Schema blocked by authentication: the endpoint requires auth we don't have to read it.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Tool Safety**: 0/100
  - Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Capabilities**: 0/100
  - Capabilities blocked by authentication: the endpoint requires auth we don't have to read them.

**Unverified: 6 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the cnpj.ia.br MCP server?

cnpj.ia.br is a hosted endpoint at https://mcp.cnpj.ia.br/, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http br-ia-cnpj-mcp 'https://mcp.cnpj.ia.br/'
```

### Cursor

```json
{
  "mcpServers": {
    "br-ia-cnpj-mcp": {
      "url": "https://mcp.cnpj.ia.br/"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "br-ia-cnpj-mcp": {
      "type": "http",
      "url": "https://mcp.cnpj.ia.br/"
    }
  }
}
```

### Codex

```toml
[mcp_servers.br-ia-cnpj-mcp]
url = "https://mcp.cnpj.ia.br/"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "br-ia-cnpj-mcp": {
      "type": "remote",
      "url": "https://mcp.cnpj.ia.br/",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add br-ia-cnpj-mcp --url 'https://mcp.cnpj.ia.br/' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  br-ia-cnpj-mcp:
    url: "https://mcp.cnpj.ia.br/"
```

### Netclaw

```json
{
  "McpServers": {
    "br-ia-cnpj-mcp": {
      "Transport": "http",
      "Url": "https://mcp.cnpj.ia.br/"
    }
  }
}
```

### Vellum

```bash
assistant mcp add br-ia-cnpj-mcp -t streamable-http -u 'https://mcp.cnpj.ia.br/'
```

### Other

```json
{
  "mcpServers": {
    "br-ia-cnpj-mcp": {
      "type": "http",
      "url": "https://mcp.cnpj.ia.br/"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-28 (score 37, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-25 (score 37, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-22 (score 37, −33)

- [security regression] Endpoint reachability: reachable → behind authorisation
- [security regression] Tool safety: pass → unverified
- [security regression] Transport: pass → unverified
- [security regression] Stability: 0.03 → unverified
- [security improvement] Authorization: fail → pass
- [security] First check of Authorization: pass
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-09-21 (score 70, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-20 (score 70)

First indexed and scored.

## MCP tools (4)

### `consultar_cnpj` (~82 tokens)

Consultar Cnpj

Consulta um CNPJ na base. Custa 1 crédito no perfil basic (cadastro) e 6 créditos no perfil full (cadastro + telefones, e-mails, site, sócios sem CPF, regime tributário, faixa de funcionários e faturamento). Prefira basic.

Input parameters:

- `cnpj` (string, required)
- `profile` (string)

### `buscar_empresas` (~136 tokens)

Buscar Empresas

Busca empresas por filtros. Página de até 20, paginação por meta.next_cursor (repassar em cursor). Custa 1 crédito por empresa retornada; página vazia custa 0. Ferramenta de plano pago: no plano Free responde insufficient_plan.

Input parameters:

- `abertura_ate`
- `abertura_de`
- `capital_max`
- `capital_min`
- `cnae`
- `cursor`
- `mei`
- `municipio`
- `natureza`
- `porte`
- `simples`
- `situacao`
- `uf`

### `gerar_filtro` (~85 tokens)

Gerar Filtro

Converte uma descrição em português nos filtros de buscar_empresas. Fluxo em dois passos: (1) descreva o público; (2) passe os campos devolvidos um a um para buscar_empresas. O campo explicacao é texto para o usuário e NÃO volta como parâmetro da busca. Custa 1 crédito por chamada.

Input parameters:

- `descricao` (string, required)

### `ver_uso` (~29 tokens)

Ver Uso

Uso e franquia da conta (objeto Usage inteiro, sem envelope). Custo 0.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp#diagnostics

## Score history

- 2026-10-04: 37
- 2026-10-03: 37
- 2026-10-02: 37
- 2026-10-01: 37
- 2026-09-30: 37
- 2026-09-29: 37
- 2026-09-28: 37
- 2026-09-27: 37
- 2026-09-26: 37
- 2026-09-25: 37
- 2026-09-24: 37
- 2026-09-23: 37
- 2026-09-22: 37
- 2026-09-21: 70
- 2026-09-20: 70

## Common questions

### What is the cnpj.ia.br MCP server?

cnpj.ia.br is an MCP server listed in the public MCP registry as br.ia.cnpj/mcp. Empresas do Brasil (CNPJ): consulta por CNPJ, busca por filtros e uso da conta. This page covers its hosted endpoint (https://mcp.cnpj.ia.br).

### Is the cnpj.ia.br MCP server safe to use?

cnpj.ia.br scores 37 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the cnpj.ia.br MCP server expose?

cnpj.ia.br exposes 4 tools: consultar_cnpj, buscar_empresas, gerar_filtro, ver_uso. Their descriptions and schemas cost roughly 332 tokens of context every time the server is loaded.

### Does the cnpj.ia.br MCP server require authentication?

Yes. cnpj.ia.br asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the cnpj.ia.br MCP server still maintained?

cnpj.ia.br is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.cnpj.ia.br/
- Repository: https://github.com/Atmosphere-Technologies/atmosphere_app
- Website: https://cnpj.ia.br/docs/mcp
- Changelog RSS feed: https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp.json
- HTML version of this page: https://verifymcp.io/servers/br-ia-cnpj-mcp/mcp