Brazilian company registry lookup by CNPJ (14-digit company tax ID). Returns legal + trade name, registration status, start date, legal nature, size, share capital (BRL), primary CNAE activity, contact, address, and partners/officers (QSA). Free, open Receita Federal data (BrasilAPI). KYB/diligen...
AI agents call business.br-cnpj to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only lookup of public Brazilian company registry data. It retrieves existing open government data without creating, modifying, or deleting anything. The pay-per-call settlement in USDC is a billing mechanism for the API service, not a financial transaction initiated by the tool itself on behalf of the user.
From the tool's definition registry lookup by CNPJ... Returns legal + trade name, registration status, start date, legal nature, size, share capital (BRL), primary CNAE activity, contact, address, and partners/officers (QSA). Free, open Receita Federal data (BrasilAPI).
Attacks that exploit this kind of access
Brazilian company registry lookup by CNPJ (14-digit company tax ID). Returns legal + trade name, registration status, start date, legal nature, size, share capital (BRL), primary CNAE activity, contact, address, and partners/officers (QSA). Free, open Receita Federal data (BrasilAPI). KYB/diligence for Brazilian companies. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for business.br-cnpj: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp. Nothing to install.
business.br-cnpj is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the business.br-cnpj rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for business.br-cnpj. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
business.br-cnpj is provided by the MCP server (@2sio/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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