ui_evaluate

Execute JavaScript code in the TradingView page context for advanced automation

SERVERTradingView MCP Bridge SOURCEbyeung888/tradingview-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/byeung888-tradingview-mcp/ui-evaluate.md

WHAT IT DOES

What ui_evaluate does on TradingView MCP Bridge

AI agents invoke ui_evaluate to trigger actions in TradingView MCP Bridge. 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.

RISK

Why ui_evaluate is rated High

This tool allows arbitrary JavaScript execution within the TradingView application context. JavaScript can be used to modify DOM, invoke functions, read/modify data, trigger external requests, and automate any browser-based action.

From the tool's definition Execute JavaScript code in the TradingView page context for advanced automation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ui_evaluate safely

PolicyLayer is an MCP gateway: it sits between your AI agents and TradingView MCP Bridge, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ui_evaluate, this is the rule to start with:

ui_evaluate Rate-limited

ui_evaluate 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_evaluate": {
      "limits": [
        {
          "counter": "ui_evaluate_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect TradingView MCP Bridge, apply this rule, and every ui_evaluate call is checked against it from then on.

FAQ

Questions about ui_evaluate

What does the ui_evaluate tool do? +

Execute JavaScript code in the TradingView page context for advanced automation. 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_evaluate? +

Register the TradingView MCP Bridge MCP server in PolicyLayer and add a rule for ui_evaluate: 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_evaluate? +

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

Can I rate-limit ui_evaluate? +

Yes. Add a rate_limit block to the ui_evaluate 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_evaluate completely? +

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

ui_evaluate is provided by the TradingView MCP Bridge MCP server (byeung888/tradingview-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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