update_shipment_status

THE RISK

Medium Risk

Why update_shipment_status needs a policy

This tool modifies state in an order management system by updating shipment status, but the changes are reversible—statuses can be corrected or adjusted. It does not delete data, execute arbitrary code, or move money.

From the tool's definition Tool description explicitly states 'Update the shipment status' and enumerates status transitions (ReadyForPickup, PickedUp, RefusedPickup), indicating reversible modification of order/shipment records.

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

POLICY

How to control update_shipment_status

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 update_shipment_status:

policy.json

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

update_shipment_status 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 →

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EXPLORE

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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 update_shipment_status

What does the update_shipment_status tool do? +

Update the shipment status of an order (Orders API v0). Used to mark MFN orders as ReadyForPickup, PickedUp, or RefusedPickup. 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 update_shipment_status? +

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

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

Can I rate-limit update_shipment_status? +

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

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

update_shipment_status 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 →