pin_top_item · Mcp Revelor MCP: Risk & Policy

WHAT IT DOES

What pin_top_item does on Mcp Revelor

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

WHY IT NEEDS A POLICY

Why pin_top_item needs a policy

This tool modifies e-shop display/merchandising settings by repositioning items in featured positions. While reversible and non-destructive, misuse could mislead customers by artificially promoting items, affecting user experience and potentially e-commerce performance. Severity is medium rather than high because the blast radius is limited to display logic rather than customer data or financial transactions.

From the tool's definition Tool description states it 'Pins a product/category/article/brand to a featured position', which modifies e-shop configuration and merchandising data. The action is reversible (can be unpinned or moved), making it a data modification rather than destructive.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pin_top_item Rate-limited

pin_top_item 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": {
    "pin_top_item": {
      "limits": [
        {
          "counter": "pin_top_item_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 Revelor, so you can run agents against it safely.

FAQ

Questions about pin_top_item

What does the pin_top_item tool do? +

Pins a product/category/article/brand to a featured position (1=top, 10=lowest). It is categorised as a Write tool in the Mcp Revelor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pin_top_item? +

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

What risk level is pin_top_item? +

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

Can I rate-limit pin_top_item? +

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

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

pin_top_item is provided by the Mcp Revelor MCP server (webotvurci-s-r-o/mcp-revelor). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.