The Square Root (SQRT) indicator calculates the square root of a given input value, often used in advanced mathematical analysis or calculations in financial markets.
AI agents call GetTimeSeriesSqrt to retrieve information from Twelve Data MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or computes derived metrics from financial time series data without modifying underlying data, creating irreversible changes, executing arbitrary code, or moving funds. It is a read-only analytical function that transforms input data mathematically. The 'Get' prefix and purely computational nature confirm Read category classification.
From the tool's definition Tool name 'GetTimeSeriesSqrt' contains 'Get' prefix, indicating data retrieval. Description states it 'calculates the square root of a given input value' - a pure mathematical computation on provided data with no side effects, no data modification, no…
Risk signalsAdmin/system-level operation
Documented attack patterns abuse exactly the kind of access GetTimeSeriesSqrt gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twelve Data MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for GetTimeSeriesSqrt:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesSqrt": {}
}
}GetTimeSeriesSqrt is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The Square Root (SQRT) indicator calculates the square root of a given input value, often used in advanced mathematical analysis or calculations in financial markets. It is categorised as a Read tool in the Twelve Data MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twelve Data MCP Server MCP server in PolicyLayer and add a rule for GetTimeSeriesSqrt: 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 Twelve Data MCP Server. Nothing to install.
GetTimeSeriesSqrt 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 GetTimeSeriesSqrt 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 GetTimeSeriesSqrt. 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.
GetTimeSeriesSqrt is provided by the Twelve Data MCP Server MCP server (twelvedata/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 186 Twelve Data MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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186 Twelve Data MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.