dom_wait_for · Ruyipage MCP: Risk & Policy

WHAT IT DOES

What dom_wait_for does on Ruyipage

AI agents invoke dom_wait_for to trigger actions in Ruyipage. 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 dom_wait_for needs a policy

This tool executes a waiting/polling operation on a live browser environment, which can trigger side effects depending on page state and timeout behavior. While it does not directly modify data (Write), delete it (Destructive), or move money (Financial), it does control browser execution flow—a characteristic of Execute category.

From the tool's definition The tool 'dom_wait_for' is part of a browser automation server that enables 'control [of] web browsers for navigation, interaction, and data collection tasks.' Waiting for elements is a control flow operation that blocks execution and triggers external…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dom_wait_for Rate-limited

dom_wait_for 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": {
    "dom_wait_for": {
      "limits": [
        {
          "counter": "dom_wait_for_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 Ruyipage, so you can run agents against it safely.

FAQ

Questions about dom_wait_for

What does the dom_wait_for tool do? +

Wait for an element to appear on the page. It is categorised as a Execute tool in the Ruyipage MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on dom_wait_for? +

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

What risk level is dom_wait_for? +

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

Can I rate-limit dom_wait_for? +

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

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

dom_wait_for is provided by the Ruyipage MCP server (neverl805/ruyipage_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.