Fichário — CNPJ Brasil

io.github.thiagopatzdorfPublished by GitHub account thiagopatzdorfv1.0.0Updated Nov 1, 2026

Free lookup of 28.4M active Brazilian companies by CNPJ or name (Receita Federal open data).

The publisher's own server: cnpj.ai

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Remote MCP server for looking up Brazilian companies by CNPJ or name, with competitors, B3 market data and court publications.

What you can do
  • Search active Brazilian companies by corporate or trade name, or by CNPJ, returning up to 20 matches.
  • Retrieve a full company record for a 14-digit CNPJ: legal name, activity, address, size, phone, website and Instagram.
  • List competitors sharing the same main CNAE activity in the same city or state, with counts and same-size companies first.
  • Check whether a company is listed on B3, with tickers, quote, market value, P/E and P/B ratios.
  • Look up recent publications in the national electronic justice gazette where the company's legal name appears.
When to use it
Useful for sales prospecting, due diligence, supplier or partner checks, and competitive research on Brazilian companies, where an assistant should pull registry, market and court-gazette information without manual lookups.
Requirements
Runs as a remote streamable HTTP endpoint; no package, account, API key or environment variable is declared. Network access to the provider's endpoint is required.
Before you install
Court-gazette matches are by exact legal name, so homonyms may appear and results should be verified. Company data comes from public sources (Receita Federal open data, CVM, B3, CNJ) and is sent to the provider's endpoint with each query.

Installation

In SourceWeft

  1. Open Fichário — CNPJ Brasil in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.thiagopatzdorf%2Ffichario/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "fich-rio-cnpj-brasil": {
      "type": "http",
      "url": "https://cnpj.genesisinnovation.io/mcp"
    }
  }
}

Tools

5

buscar_empresa

Busca empresas brasileiras ativas pelo nome (razão social ou fantasia) ou CNPJ. Devolve até 20 resultados.

Parametersufcidadeconsultarequired

consultar_cnpj

Ficha completa de uma empresa pelo CNPJ (14 dígitos): razão social, atividade, endereço, porte, telefone, site e Instagram.

Parameterscnpjrequiredverificar

listar_concorrentes

Concorrentes de uma empresa: outras empresas ativas com a mesma atividade principal (CNAE) na mesma cidade (ou no estado), mesmo porte primeiro, com contagens.

Parameterscnpjrequiredlimite

dados_bolsa

Se a empresa é companhia aberta na B3: tickers, cotação, valor de mercado, P/L e P/VP (Genesis Bolsa, CVM + B3).

Parameterscnpjrequired

publicacoes_judiciais

Publicações recentes no Diário de Justiça Eletrônico Nacional (CNJ) com a razão social da empresa como parte (casamento por nome exato; pode haver homônimos).

Parameterscnpjrequired

Version history

1
  1. v1.0.0LatestNov 1, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

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