Get ATR (Average True Range) for a symbol from active or specific broker in your session
AI agents call get_atr to retrieve information from Turtlestack Lite without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
ATR is a technical indicator calculation that retrieves market data or pre-calculated values for analysis purposes. No data is created, modified, deleted, or executed as a result of calling this tool. It is a passive read operation used to inform trading decisions but does not itself perform trades or modify system state.
From the tool's definition Tool name 'get_atr' and description 'Get ATR (Average True Range) for a symbol' indicates data retrieval. The verb 'Get' and the phrase 'for a symbol' (query parameter) confirm this is a retrieval operation without side effects.
Documented attack patterns abuse exactly the kind of access get_atr gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Turtlestack Lite, and nothing reaches the server without passing your rules. This is the rule we recommend for get_atr:
{
"version": "1",
"default": "deny",
"tools": {
"get_atr": {}
}
}get_atr is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get ATR (Average True Range) for a symbol from active or specific broker in your session. It is categorised as a Read tool in the Turtlestack Lite MCP Server, which means it retrieves data without modifying state.
Register the Turtlestack Lite MCP server in PolicyLayer and add a rule for get_atr: 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 Turtlestack Lite. Nothing to install.
get_atr is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_atr 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 get_atr. 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.
get_atr is provided by the Turtlestack Lite MCP server (turtlehq-tech/turtlestack-lite). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Turtlestack Lite, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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