The Ultimate Oscillator (ULTOSC) is a momentum oscillator that combines short, intermediate, and long-term price action to identify potential overbought or oversold conditions and trend reversals.
AI agents call GetTimeSeriesUltOsc 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.
GetTimeSeriesUltOsc is a read-only technical analysis tool that computes and returns momentum indicator values derived from market data. It performs data retrieval and calculation only, producing informational output for analysis without modifying any state, executing arbitrary code, or causing financial transactions. This is a typical Read operation common in financial data APIs.
From the tool's definition Tool retrieves and calculates a technical indicator (Ultimate Oscillator) based on historical price data. Description indicates it 'identifies potential overbought or oversold conditions' — an analytical operation with no data modification, deletion, or…
Documented attack patterns abuse exactly the kind of access GetTimeSeriesUltOsc 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 GetTimeSeriesUltOsc:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesUltOsc": {}
}
}GetTimeSeriesUltOsc is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The Ultimate Oscillator (ULTOSC) is a momentum oscillator that combines short, intermediate, and long-term price action to identify potential overbought or oversold conditions and trend reversals. 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 GetTimeSeriesUltOsc: 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.
GetTimeSeriesUltOsc 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 GetTimeSeriesUltOsc 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 GetTimeSeriesUltOsc. 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.
GetTimeSeriesUltOsc 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.