retrieve_customer

THE RISK

Low Risk

Why retrieve_customer needs a policy

This tool performs a read-only query operation to fetch customer information. It has no side effects, does not modify data, does not execute code, and does not involve financial transactions. The blast radius of misuse is limited to potential unauthorized data access/disclosure of customer profiles, which is a low-severity information disclosure risk rather than a critical system compromise.

From the tool's definition Tool name 'retrieve_customer' and description 'Retrieve a customer by id. Returns the customer profile plus metadata.' indicate data retrieval without modification or deletion.

Documented attack patterns abuse exactly the kind of access retrieve_customer gives an agent:

POLICY

How to control retrieve_customer

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for retrieve_customer:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "retrieve_customer": {}
  }
}

retrieve_customer is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about retrieve_customer

What does the retrieve_customer tool do? +

Retrieve a customer by id. Returns the customer profile plus metadata. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on retrieve_customer? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for retrieve_customer: 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 Afip. Nothing to install.

What risk level is retrieve_customer? +

retrieve_customer is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit retrieve_customer? +

Yes. Add a rate_limit block to the retrieve_customer 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.

How do I block retrieve_customer completely? +

Set action: deny in the PolicyLayer policy for retrieve_customer. 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.

What MCP server provides retrieve_customer? +

retrieve_customer is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →