The MESA Adaptive Moving Average (MAMA) is a moving average that adapts to price movement based on the dominant market cycle, providing a balance between responsiveness and noise reduction. More about MAMA can be read [here](http://www.mesasoftware.com/papers/MAMA.pdf).
AI agents call GetTimeSeriesMama 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.
GetTimeSeriesMama is a data retrieval and calculation tool that computes a moving average indicator from historical price data. It does not create, modify, delete, or execute code/commands. It does not move money or commit financial obligations—it only reads/analyzes market data to produce a derived metric.
From the tool's definition Tool retrieves and calculates a technical analysis indicator (MESA Adaptive Moving Average) based on time series data. Description indicates it 'provides' analysis of price movement with no modification, deletion, or execution of external operations.
Documented attack patterns abuse exactly the kind of access GetTimeSeriesMama 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 GetTimeSeriesMama:
{
"version": "1",
"default": "deny",
"tools": {
"GetTimeSeriesMama": {}
}
}GetTimeSeriesMama is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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The MESA Adaptive Moving Average (MAMA) is a moving average that adapts to price movement based on the dominant market cycle, providing a balance between responsiveness and noise reduction. More about MAMA can be read [here](http://www.mesasoftware.com/papers/MAMA.pdf). 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 GetTimeSeriesMama: 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.
GetTimeSeriesMama 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 GetTimeSeriesMama 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 GetTimeSeriesMama. 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.
GetTimeSeriesMama 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.