Scroll down on the current screen.
AI agents invoke scroll_down to trigger actions in Vphone. 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.
Scrolling is a UI interaction that executes a touch gesture on the virtual device. While it has no direct data modification effect, it is an action that operates the device (Execute category), not a passive read. Misuse potential is low as it only changes the viewport position.
From the tool's definition 'Scroll down on the current screen' — triggers a touch/gesture interaction on an iOS virtual machine
Documented attack patterns abuse exactly the kind of access scroll_down gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vphone, and nothing reaches the server without passing your rules. This is the rule we recommend for scroll_down:
{
"version": "1",
"default": "deny",
"tools": {
"scroll_down": {
"limits": [
{
"counter": "scroll_down_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}scroll_down 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.
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Scroll down on the current screen. It is categorised as a Execute tool in the Vphone MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Vphone MCP server in PolicyLayer and add a rule for scroll_down: 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 Vphone. Nothing to install.
scroll_down is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the scroll_down 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.
Set action: deny in the PolicyLayer policy for scroll_down. 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.
scroll_down is provided by the Vphone MCP server (pluginslab/vphone-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Vphone, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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17 Vphone tools catalogued and risk-classified — across an index of 43,000+ MCP servers.