Get a location data given a CEP (postal code).
AI agents call get_postal_code_v1 to retrieve information from BrasilAPI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
cep | string | — | The CEP to query |
Parameters from the server's own tool schema.
This tool queries and retrieves location information based on a postal code input. It performs a read-only lookup operation against BrasilAPI's postal code database. There is no capability to modify, delete, execute code, or trigger external operations. The data retrieved is public postal/geographic information with no financial implications.
From the tool's definition Tool name 'get_postal_code_v1' and description 'Get a location data given a CEP (postal code)' indicate a pure retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get a location data given a CEP (postal code). It is categorised as a Read tool in the BrasilAPI MCP Server MCP Server, which means it retrieves data without modifying state.
get_postal_code_v1 accepts 1 parameter: cep. The full parameter table on this page comes from the server's own tool schema.
Register the BrasilAPI MCP Server MCP server in PolicyLayer and add a rule for get_postal_code_v1: 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 BrasilAPI MCP Server. Nothing to install.
get_postal_code_v1 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 get_postal_code_v1 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 get_postal_code_v1. 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.
get_postal_code_v1 is provided by the BrasilAPI MCP Server MCP server (mauricio-cantu/brasil-api-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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