Validates a Brazilian PIX key — the instant payment identifier used by Brazil
AI agents call validate_pix_key to retrieve information from Mcp Latam Business 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 validation check on a payment identifier. It retrieves or queries data about PIX key validity without creating, modifying, deleting, executing code, or moving money. The operation is purely informational for compliance and verification purposes, making it a Read category tool with low severity risk.
From the tool's definition Tool name 'validate_pix_key' and description 'Validates a Brazilian PIX key' indicate a validation/verification operation with no side effects.
Attacks that exploit this kind of access
Validates a Brazilian PIX key — the instant payment identifier used by Brazil. It is categorised as a Read tool in the Mcp Latam Business MCP Server, which means it retrieves data without modifying state.
Register the Mcp Latam Business MCP server in PolicyLayer and add a rule for validate_pix_key: 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 Latam Business. Nothing to install.
validate_pix_key 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 validate_pix_key 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 validate_pix_key. 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.
validate_pix_key is provided by the Mcp Latam Business MCP server (josemvelez78/mcp-latam-business). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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