The Linear Regression (LINEARREG) indicator calculates the best-fit straight line through a series of data points, helping traders identify trends and potential support or resistance levels.
AI agents call GetTimeSeriesLinearReg 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.
GetTimeSeriesLinearReg performs a read-only statistical analysis on time series data. It retrieves or transforms data without persisting changes, executing financial transactions, running arbitrary code, or deleting information.
From the tool's definition Tool description states it 'calculates the best-fit straight line through a series of data points' to 'identify trends and potential support or resistance levels.' This is a technical analysis indicator that processes historical market data to produce…
Documented attack patterns abuse exactly the kind of access GetTimeSeriesLinearReg 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 GetTimeSeriesLinearReg:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesLinearReg": {}
}
}GetTimeSeriesLinearReg 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.
The Linear Regression (LINEARREG) indicator calculates the best-fit straight line through a series of data points, helping traders identify trends and potential support or resistance levels. 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 GetTimeSeriesLinearReg: 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.
GetTimeSeriesLinearReg 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 GetTimeSeriesLinearReg 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 GetTimeSeriesLinearReg. 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.
GetTimeSeriesLinearReg 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.
Free to start. No card required.
186 Twelve Data MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.