shorten_url_batch · MCP-Server MCP: Risk & Policy

WHAT IT DOES

What shorten_url_batch does on MCP-Server

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

WHY IT NEEDS A POLICY

Why shorten_url_batch needs a policy

This tool creates new shortened URL records (write operations) for multiple URLs simultaneously. It is reversible in principle (shortened URLs can be deleted), so it falls under Write rather than Destructive. The batch nature slightly elevates severity since misuse could create many unwanted URL mappings at once, but it does not execute code, move money, or destroy data.

From the tool's definition 'Shorten multiple URLs at once' — creates shortened URL entries for multiple URLs in batch

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

shorten_url_batch Rate-limited

shorten_url_batch 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": {
    "shorten_url_batch": {
      "limits": [
        {
          "counter": "shorten_url_batch_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-Server, so you can run agents against it safely.

FAQ

Questions about shorten_url_batch

What does the shorten_url_batch tool do? +

Shorten multiple URLs at once. Separate URLs with newlines or commas. It is categorised as a Write tool in the MCP-Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on shorten_url_batch? +

Register the MCP-Server MCP server in PolicyLayer and add a rule for shorten_url_batch: 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-Server. Nothing to install.

What risk level is shorten_url_batch? +

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

Can I rate-limit shorten_url_batch? +

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

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

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