Confere (Brasil)

io.github.guilherme-gaigaPublished by GitHub account guilherme-gaigav0.5.0Updated Nov 14, 2026

Check a Brazilian company (CNPJ) before paying: registry status, age and name, with sources.

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Checks a Brazilian company's CNPJ in the Receita Federal registry before a payment, returning status, company age and registered name with sources.

What you can do
  • Look up a Brazilian company by CNPJ and get its registration status at Receita Federal, company age and registered name (legal and trade name).
  • Compare the registered name with whoever is requesting payment to spot impersonation.
  • Receive each signal with its source and the time of the lookup, plus a list of limits.
  • Accepts a website argument, but domain checks are not active in this version and the result says so.
When to use it
Useful before paying an unfamiliar Brazilian supplier or invoice issuer, when you want a quick registry-based sanity check on the company behind the CNPJ. It is a signal-gathering aid, not a fraud verdict or reputation score.
Requirements
A remote MCP endpoint over streamable HTTP; no package, account, API key or environment variable is declared. Network access to the endpoint is needed.
Before you install
It does not assert fraud and does not measure reputation, so no alerts is not a guarantee; pass on the stated limits and cite sources and lookup time. Only companies (CNPJ) can be checked, never individuals (CPF). Website checks are not active, so a site argument yields no verification. Queries go to a third-party endpoint.

Installation

In SourceWeft

  1. Open Confere (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.guilherme-gaiga%2Fconfere/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": {
    "confere-brasil": {
      "type": "http",
      "url": "https://confere.guilherme-gaiga.workers.dev/mcp"
    }
  }
}

Tools

1

conferir_empresa

Conferir empresa ou site brasileiro

Check a Brazilian company (CNPJ) before paying it: registration status at Receita Federal, company age and the registered name to compare with whoever is charging. Returns signals with their sources; it does not assert fraud. Website checks are not active in this version. Confere empresa (CNPJ) antes de um pagamento. Free, rate-limited.

Parameterscnpjsite

Version history

1
  1. v0.5.0LatestNov 14, 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.