pinchtab_hover · Pinchtab MCP: Risk & Policy

WHAT IT DOES

What pinchtab_hover does on Pinchtab

AI agents invoke pinchtab_hover to trigger actions in Pinchtab. 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 pinchtab_hover needs a policy

This tool triggers browser events (mouseover/mouseenter) on DOM elements, which constitutes executing browser actions. While hovering is generally benign (revealing tooltips or dropdowns), it actively triggers external operations in the browser environment. It cannot read data on its own, but the event triggers could cause side effects like loading content or revealing interactive elements.

From the tool's definition Hover over an element by its ref ID. Triggers mouseover/mouseenter events

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pinchtab_hover Rate-limited

pinchtab_hover 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": {
    "pinchtab_hover": {
      "limits": [
        {
          "counter": "pinchtab_hover_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 Pinchtab, so you can run agents against it safely.

FAQ

Questions about pinchtab_hover

What does the pinchtab_hover tool do? +

Hover over an element by its ref ID. Triggers mouseover/mouseenter events — useful for revealing tooltips, dropdown menus, or hover states. It is categorised as a Execute tool in the Pinchtab MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on pinchtab_hover? +

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

What risk level is pinchtab_hover? +

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

Can I rate-limit pinchtab_hover? +

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

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

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