The Weighted Moving Average (WMA) is a smoothing indicator that calculates the average price of a security over a specified period, with more weight given to recent prices, providing a more responsive view of price action.
AI agents call GetTimeSeriesWma 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 and computes a technical indicator (Weighted Moving Average) from historical price data. It performs a read-only mathematical calculation on existing financial market data without creating, modifying, deleting, or executing any operations.
From the tool's definition Tool name 'GetTimeSeriesWma' and description state it 'calculates the average price' and 'provides a view of price action'—a data retrieval and analysis operation with no modification, deletion, or execution of external commands.
Documented attack patterns abuse exactly the kind of access GetTimeSeriesWma 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 GetTimeSeriesWma:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesWma": {}
}
}GetTimeSeriesWma 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 Weighted Moving Average (WMA) is a smoothing indicator that calculates the average price of a security over a specified period, with more weight given to recent prices, providing a more responsive 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 GetTimeSeriesWma: 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.
GetTimeSeriesWma 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 GetTimeSeriesWma 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 GetTimeSeriesWma. 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.
GetTimeSeriesWma 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.