The Triangular Moving Average (TRIMA) is a smoothing indicator that calculates the average price of a security over a specified period, weighting prices in the middle of the range more heavily, providing a balanced view of price action.
AI agents call GetTimeSeriesTrima 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.
GetTimeSeriesTrima retrieves and computes technical analysis metrics from existing financial market data. It performs a read-only statistical calculation on time series data without creating, modifying, deleting, executing code, or moving money. The output is informational (a moving average indicator) used for analysis purposes.
From the tool's definition Tool calculates and returns a smoothing indicator (Triangular Moving Average) based on historical price data.
Documented attack patterns abuse exactly the kind of access GetTimeSeriesTrima 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 GetTimeSeriesTrima:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesTrima": {}
}
}GetTimeSeriesTrima is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The Triangular Moving Average (TRIMA) is a smoothing indicator that calculates the average price of a security over a specified period, weighting prices in the middle of the range more heavily, providing a balanced view of price action. 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 GetTimeSeriesTrima: 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.
GetTimeSeriesTrima 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 GetTimeSeriesTrima 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 GetTimeSeriesTrima. 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.
GetTimeSeriesTrima 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.