chart_set_timeframe · TradingView MCP Bridge MCP

WHAT IT DOES

What chart_set_timeframe does on TradingView MCP Bridge

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

WHY IT NEEDS A POLICY

Why chart_set_timeframe needs a policy

This tool modifies the chart's display settings (timeframe/resolution), which is a reversible write operation affecting only the UI state of the TradingView chart. No data is deleted, no code is executed, and no financial transactions occur. Misuse has minimal blast radius as the change can easily be undone.

From the tool's definition Change the chart timeframe/resolution

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

chart_set_timeframe Rate-limited

chart_set_timeframe 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": {
    "chart_set_timeframe": {
      "limits": [
        {
          "counter": "chart_set_timeframe_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 Bridge, so you can run agents against it safely.

FAQ

Questions about chart_set_timeframe

What does the chart_set_timeframe tool do? +

Change the chart timeframe/resolution. It is categorised as a Write tool in the TradingView MCP Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on chart_set_timeframe? +

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

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

Can I rate-limit chart_set_timeframe? +

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

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

chart_set_timeframe is provided by the TradingView MCP Bridge MCP server (thinhbv/tradingview_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.