Change the chart timeframe/resolution
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.
This tool changes the timeframe/resolution of a TradingView chart. It modifies the state of the chart view (a reversible UI change), placing it in the Write category. The blast radius is low since it only affects the local TradingView Desktop display and can be easily changed back.
From the tool's definition 'Change the chart timeframe/resolution' — modifies the chart's display settings
Documented attack patterns abuse exactly the kind of access chart_set_timeframe gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and TradingView MCP Bridge, and nothing reaches the server without passing your rules. This is the rule we recommend for chart_set_timeframe:
{
"version": "1",
"default": "deny",
"tools": {
"chart_set_timeframe": {
"limits": [
{
"counter": "chart_set_timeframe_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}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.
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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.
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.
chart_set_timeframe is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
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.
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.
chart_set_timeframe is provided by the TradingView MCP Bridge MCP server (tradesdontlie/tradingview-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 78 TradingView MCP Bridge tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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78 TradingView MCP Bridge tools catalogued and risk-classified — across an index of 42,500+ MCP servers.