reduce_pantry_amount · Pantrist MCP: Risk & Policy

WHAT IT DOES

What reduce_pantry_amount does on Pantrist

AI agents use reduce_pantry_amount to create or update resources in Pantrist — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pantrist environment.

WHY IT NEEDS A POLICY

Why reduce_pantry_amount needs a policy

This tool modifies an existing pantry item's stock level by applying a delta value. It mutates state (Write category) but is reversible — the amount can be changed back. It does not delete data, execute code, or involve financial transactions. Severity is medium because misuse could corrupt pantry inventory tracking across all devices in real time.

From the tool's definition Change the stock of an existing pantry item by a delta. Mutates state and returns the updated

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reduce_pantry_amount Rate-limited

reduce_pantry_amount 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Pantrist, so you can run agents against it safely.

FAQ

Questions about reduce_pantry_amount

What does the reduce_pantry_amount tool do? +

Change the stock of an existing pantry item by a delta. Mutates state and returns the updated. It is categorised as a Write tool in the Pantrist MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reduce_pantry_amount? +

Register the Pantrist MCP server in PolicyLayer and add a rule for reduce_pantry_amount: 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 Pantrist. Nothing to install.

What risk level is reduce_pantry_amount? +

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

Can I rate-limit reduce_pantry_amount? +

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

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

reduce_pantry_amount is provided by the Pantrist MCP server (pantrist-dev/pantrist-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.