The Accumulation/Distribution Oscillator (ADOSC) is a momentum indicator derived from the AD line, used to identify buying or selling pressure and potential trend reversals by comparing short-term and long-term price and volume trends.
AI agents call GetTimeSeriesAdOsc 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.
GetTimeSeriesAdOsc is a read-only analytical tool that queries historical market data and computes a technical indicator. It retrieves information to inform trading decisions but does not execute trades, modify accounts, move funds, or alter any data. This is consistent with the Read category: data retrieval with no side effects.
From the tool's definition Tool retrieves and calculates financial indicator data (Accumulation/Distribution Oscillator) from the Twelve Data API.
Documented attack patterns abuse exactly the kind of access GetTimeSeriesAdOsc 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 GetTimeSeriesAdOsc:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesAdOsc": {}
}
}GetTimeSeriesAdOsc is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The Accumulation/Distribution Oscillator (ADOSC) is a momentum indicator derived from the AD line, used to identify buying or selling pressure and potential trend reversals by comparing short-term and long-term price and volume trends. 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 GetTimeSeriesAdOsc: 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.
GetTimeSeriesAdOsc 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 GetTimeSeriesAdOsc 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 GetTimeSeriesAdOsc. 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.
GetTimeSeriesAdOsc 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.