trader_prepare_chart · Tradingview MCP: Risk & Policy

WHAT IT DOES

What trader_prepare_chart does on Tradingview

AI agents invoke trader_prepare_chart 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 trader_prepare_chart needs a policy

The tool orchestrates multiple MCP commands to configure a live TradingView Desktop chart via Chrome DevTools Protocol. This is an Execute-category action because it triggers external operations (manipulating a running application) whose effects depend on the arguments provided. It is not purely Read (it changes chart state), not Write in a data-persistence sense, and not Destructive or Financial.

From the tool's definition 'Genera la secuencia de comandos MCP para configurar el chart de TradingView' — generates and executes a sequence of MCP commands to configure the TradingView chart (symbol, timeframe, trade levels)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

trader_prepare_chart Rate-limited

trader_prepare_chart 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": {
    "trader_prepare_chart": {
      "limits": [
        {
          "counter": "trader_prepare_chart_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 trader_prepare_chart

What does the trader_prepare_chart tool do? +

Genera la secuencia de comandos MCP para configurar el chart de TradingView: símbolo, timeframe y niveles del trade. 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 trader_prepare_chart? +

Register the Tradingview MCP server in PolicyLayer and add a rule for trader_prepare_chart: 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 trader_prepare_chart? +

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

Can I rate-limit trader_prepare_chart? +

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

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

trader_prepare_chart 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.