The Pivot Points High Low (PIVOT_POINTS_HL) indicator calculates support and resistance levels based on the highest high and lowest low of a security
AI agents call GetTimeSeriesPivotPointsHL 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 performs a computational analysis on time series data to derive technical analysis metrics. It has no side effects, creates no new data in external systems, and does not modify or delete information. The output is a read-only analytical calculation returned to the requester. This is consistent with the Read category: retrieves or queries data without side effects.
From the tool's definition Tool retrieves and calculates financial indicator values (pivot points support/resistance levels) based on historical market data.
Documented attack patterns abuse exactly the kind of access GetTimeSeriesPivotPointsHL 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 GetTimeSeriesPivotPointsHL:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesPivotPointsHL": {}
}
}GetTimeSeriesPivotPointsHL is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The Pivot Points High Low (PIVOT_POINTS_HL) indicator calculates support and resistance levels based on the highest high and lowest low of a security. 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 GetTimeSeriesPivotPointsHL: 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.
GetTimeSeriesPivotPointsHL 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 GetTimeSeriesPivotPointsHL 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 GetTimeSeriesPivotPointsHL. 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.
GetTimeSeriesPivotPointsHL 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.