mark_item_used · Mcp Veggie MCP: Risk & Policy

WHAT IT DOES

What mark_item_used does on Mcp Veggie

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

WHY IT NEEDS A POLICY

Why mark_item_used needs a policy

This tool modifies data (marking an item's status) but does so reversibly—the state change can be corrected or undone. It does not delete data, execute external commands, move money, or trigger destructive operations.

From the tool's definition Tool name 'mark_item_used' and description 'Mark a box item as consumed/used' indicate updating state to reflect consumption of produce items.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mark_item_used Rate-limited

mark_item_used 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": {
    "mark_item_used": {
      "limits": [
        {
          "counter": "mark_item_used_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 Mcp Veggie, so you can run agents against it safely.

FAQ

Questions about mark_item_used

What does the mark_item_used tool do? +

Mark a box item as consumed/used. It is categorised as a Write tool in the Mcp Veggie MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mark_item_used? +

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

What risk level is mark_item_used? +

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

Can I rate-limit mark_item_used? +

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

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

mark_item_used is provided by the Mcp Veggie MCP server (lovettbarron/mcp-veggiebox). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.