pinchtab_wait_for_selector · Pinchtab MCP: Risk & Policy

WHAT IT DOES

What pinchtab_wait_for_selector does on Pinchtab

AI agents invoke pinchtab_wait_for_selector 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_wait_for_selector needs a policy

This tool triggers a browser operation (polling for DOM elements) whose effects depend on the current page state and selector argument. While it doesn't delete data, move money, or modify content, it actively manipulates browser behavior and execution flow—characteristics of Execute category.

From the tool's definition Tool performs browser automation that "waits for a CSS selector to appear on the page" and "polls every 500ms up to the timeout." This is an active operation that changes the browser state and timing behavior, similar to other tools in the sibling set like…

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pinchtab_wait_for_selector Rate-limited

pinchtab_wait_for_selector 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_wait_for_selector": {
      "limits": [
        {
          "counter": "pinchtab_wait_for_selector_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_wait_for_selector

What does the pinchtab_wait_for_selector tool do? +

Wait for a CSS selector to appear on the page. Polls every 500ms up to the timeout. Useful for waiting on dynamic content, modals, or lazy-loaded elements. 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_wait_for_selector? +

Register the Pinchtab MCP server in PolicyLayer and add a rule for pinchtab_wait_for_selector: 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_wait_for_selector? +

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

Can I rate-limit pinchtab_wait_for_selector? +

Yes. Add a rate_limit block to the pinchtab_wait_for_selector 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_wait_for_selector completely? +

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

pinchtab_wait_for_selector 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.