layout_switch · TradingView MCP: Risk & Policy

WHAT IT DOES

What layout_switch does on TradingView MCP

AI agents use layout_switch to create or update resources in TradingView MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TradingView MCP environment.

WHY IT NEEDS A POLICY

Why layout_switch needs a policy

Switching to a different chart layout modifies the active view/state of the TradingView application. This is a reversible change (you can switch back) that alters the UI configuration, making it a Write operation. Misuse could disrupt an analyst's current workspace or cause loss of unsaved work, giving it medium severity.

From the tool's definition Switch to a saved chart layout by name or ID

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

layout_switch Rate-limited

layout_switch stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "layout_switch": {
      "limits": [
        {
          "counter": "layout_switch_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 MCP, so you can run agents against it safely.

FAQ

Questions about layout_switch

What does the layout_switch tool do? +

Switch to a saved chart layout by name or ID. It is categorised as a Write tool in the TradingView MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on layout_switch? +

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

What risk level is layout_switch? +

layout_switch is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit layout_switch? +

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

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

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