The Know Sure Thing (KST) is a momentum oscillator that combines four different smoothed rates of change to generate a single trend-following indicator. By measuring the price momentum across multiple timeframes, KST helps traders identify potential trend reversals, overbought, or oversold condit...
AI agents call GetTimeSeriesKst 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 queries financial market data and computes a technical analysis indicator. It has no side effects—it neither modifies data nor executes transactions or commands. It falls squarely within the Read category as a data retrieval and calculation service.
From the tool's definition Tool retrieves and calculates a technical indicator (KST momentum oscillator) based on price data. The description indicates it 'helps traders identify' conditions and 'opportunities' through analysis, with no mention of executing trades, modifying data, or…
Documented attack patterns abuse exactly the kind of access GetTimeSeriesKst 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 GetTimeSeriesKst:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesKst": {}
}
}GetTimeSeriesKst 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 Know Sure Thing (KST) is a momentum oscillator that combines four different smoothed rates of change to generate a single trend-following indicator. By measuring the price momentum across multiple timeframes, KST helps traders identify potential trend reversals, overbought, or oversold conditions, and trading opportunities. 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 GetTimeSeriesKst: 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.
GetTimeSeriesKst 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 GetTimeSeriesKst 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 GetTimeSeriesKst. 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.
GetTimeSeriesKst 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.