ui_hover

THE RISK

High Risk

This tool triggers a browser/UI action (hover) via Chrome DevTools Protocol, which constitutes executing an external operation. Hovering can trigger UI state changes like tooltips, dropdown menus, or other interactive elements. While not directly destructive, it manipulates the running TradingView application and could be chained with other tools to cause significant effects.

From the tool's definition Hover over a UI element by aria-label, data-name, or text content

Documented attack patterns abuse exactly the kind of access ui_hover gives an agent:

HOW TO CONTROL UI_HOVER

PolicyLayer is an MCP gateway — it sits between your AI agents and TradingView MCP Bridge, and nothing reaches the server without passing your rules. This is the rule we recommend for ui_hover:

policy.json

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

ui_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.

Create a free account and register TradingView MCP Bridge — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

More TradingView MCP Bridge tools

Destructive alert_delete Delete all alerts or open context menu for deletion Destructive draw_clear Remove all drawings from the chart Destructive draw_remove_one Remove a specific drawing by entity ID Execute batch_run Run an action across multiple symbols and/or timeframes Execute pine_compile Compile / add the current Pine Script to the chart Execute pine_smart_compile Intelligent compile: detects button, compiles, checks errors, reports study changes Execute replay_start Start bar replay mode, optionally at a specific date Execute replay_stop Stop replay and return to realtime

All 78 TradingView MCP Bridge tools →

Execute tools on other servers

Frida Game Hacking MCP remove_breakpoint Procmon request_elevation WireMCP capture_packets Pentest Ai run_probe

Go deeper

High-risk tools in TradingView MCP Bridge → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the ui_hover tool do? +

Hover over a UI element by aria-label, data-name, or text content. It is categorised as a Execute tool in the TradingView MCP Bridge MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on ui_hover? +

Register the TradingView MCP Bridge MCP server in PolicyLayer and add a rule for ui_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 TradingView MCP Bridge. Nothing to install.

What risk level is ui_hover? +

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

Can I rate-limit ui_hover? +

Yes. Add a rate_limit block to the ui_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 ui_hover completely? +

Set action: deny in the PolicyLayer policy for ui_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 ui_hover? +

ui_hover is provided by the TradingView MCP Bridge MCP server (tradesdontlie/tradingview-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every TradingView MCP Bridge tool call.

Deterministic rules across all 78 TradingView MCP Bridge tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

GOVERN TRADINGVIEW MCP BRIDGE →

Free to start. No card required.

78 TradingView MCP Bridge tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT UI_HOVER ON TRADINGVIEW MCP BRIDGE DOES

// THE RISK

// HOW TO CONTROL UI_HOVER

// EXPLORE