confirm_return

THE RISK

Medium Risk

Why confirm_return needs a policy

This tool accepts/confirms a return request, which is a reversible write operation that modifies the state of a return transaction. It does not directly move money (though it may trigger downstream refund processes), and it doesn't irreversibly delete data. The financial implication is indirect, so Write is the most appropriate category.

From the tool's definition Confirm (accept) a buyer-initiated return request by return_sn

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

POLICY

How to control confirm_return

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 confirm_return:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "confirm_return": {
      "limits": [
        {
          "counter": "confirm_return_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

confirm_return stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. 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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about confirm_return

What does the confirm_return tool do? +

Confirm (accept) a buyer-initiated return request by return_sn. It is categorised as a Write tool in the Mcp Afip MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on confirm_return? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for confirm_return: 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 confirm_return? +

confirm_return is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit confirm_return? +

Yes. Add a rate_limit block to the confirm_return 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 confirm_return completely? +

Set action: deny in the PolicyLayer policy for confirm_return. 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 confirm_return? +

confirm_return 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 →