ui_type_text · Tradingview MCP: Risk & Policy

WHAT IT DOES

What ui_type_text does on Tradingview

AI agents invoke ui_type_text to trigger actions in Tradingview. 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 ui_type_text needs a policy

This tool performs a browser/UI action (typing text into a focused input) via Chrome DevTools Protocol, which triggers external operations in the TradingView Desktop app. It can be used to input arbitrary text into any focused field, including search boxes, script editors, or order forms, making it an Execute-category tool.

From the tool's definition Type text into the currently focused input/textarea element

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ui_type_text Rate-limited

ui_type_text 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": {
    "ui_type_text": {
      "limits": [
        {
          "counter": "ui_type_text_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 Tradingview, so you can run agents against it safely.

FAQ

Questions about ui_type_text

What does the ui_type_text tool do? +

Type text into the currently focused input/textarea element. It is categorised as a Execute tool in the Tradingview 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_type_text? +

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

What risk level is ui_type_text? +

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

Can I rate-limit ui_type_text? +

Yes. Add a rate_limit block to the ui_type_text 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_type_text completely? +

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

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