# cnpj.ai Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## cnpj.ai

Look up Brazilian company information, owners and corporate connections by CNPJ registration number.

- Record: https://musedirectory.ai/connector/cnpj-ai
- Category: Research & Data
- Developer: cnpj.ai (https://mcp.cnpj.ai)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, sign-in needed, 753ms, checked 2026-09-28T07:16:06Z
- Endpoint: https://mcp.cnpj.ai/mcp
- Auth: Sign in with your account; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T00:10:52Z)
- Source: Found in the official MCP Registry (ai.cnpj/mcp) https://registry.modelcontextprotocol.io/v0/servers?search=ai.cnpj%2Fmcp

Connects to Brazilian CNPJ company registry data. Muse can retrieve company details, ownership information and corporate network connections for any registered Brazilian business using its CNPJ identifier.

Example request: "Show me the owners and corporate structure of this Brazilian company using its CNPJ number."

How to connect: cnpj.ai is not in Muse's Connectors list yet, and it needs you to sign in with your cnpj.ai account. Apps that need this kind of sign-in usually cannot be used from a Muse chat yet. Follow it here and we will tell you when it reaches Muse.

Screening checks:
- MCP handshake: pass (Requires sign-in (publishes OAuth metadata))
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.cnpj.ai not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: n/a (Tools are behind sign-in)
- Inputs asking for passwords, card numbers or seed phrases: n/a (Tools are behind sign-in)
- Domain and redirects: pass (Domain registered 802 days ago)
- AI review of purpose and tool behavior: pass (No concerns)