pane_set_symbol · TradingView MCP: Risk & Policy

WHAT IT DOES

What pane_set_symbol does on TradingView MCP

AI agents use pane_set_symbol 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 pane_set_symbol needs a policy

This tool modifies the current state of a TradingView chart pane by changing which symbol is displayed. While the change is reversible (a user or subsequent tool call can set it back), it alters the working state of the application. This is a Write operation rather than Read (which would only retrieve the symbol) or Execute (which would run code/commands).

From the tool's definition Tool name 'pane_set_symbol' and description 'Set the symbol on a specific pane by index' indicate modification of chart state. The verb 'set' combined with the action of changing a displayed symbol constitutes reversible state modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pane_set_symbol Rate-limited

pane_set_symbol 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": {
    "pane_set_symbol": {
      "limits": [
        {
          "counter": "pane_set_symbol_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 pane_set_symbol

What does the pane_set_symbol tool do? +

Set the symbol on a specific pane by index. 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 pane_set_symbol? +

Register the TradingView MCP server in PolicyLayer and add a rule for pane_set_symbol: 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 pane_set_symbol? +

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

Can I rate-limit pane_set_symbol? +

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

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

pane_set_symbol 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.