scout_scroll · Scout MCP: Risk & Policy

WHAT IT DOES

What scout_scroll does on Scout

AI agents invoke scout_scroll to trigger actions in Scout. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why scout_scroll needs a policy

Scrolling is a browser interaction/action that triggers an external operation on a web page. While it has minimal side effects, it is a browser action (like click) that manipulates the browser state. It belongs to Execute as it performs a UI interaction rather than simply reading data, though the blast radius is low since scrolling alone rarely causes irreversible harm.

From the tool's definition Scroll the page or a specific element (modal, dialog) in a direction

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

scout_scroll Rate-limited

scout_scroll stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "scout_scroll": {
      "limits": [
        {
          "counter": "scout_scroll_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about scout_scroll

What does the scout_scroll tool do? +

Scroll the page or a specific element (modal, dialog) in a direction. Use element_id to scroll within a container instead of the whole page. It is categorised as a Execute tool in the Scout MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on scout_scroll? +

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

What risk level is scout_scroll? +

scout_scroll is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit scout_scroll? +

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

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

scout_scroll is provided by the Scout MCP server (lautrek/scout). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.