MESA Adaptive Moving Average (MAMA)
AI agents call technicalIndicators_mama to retrieve information from MCP Avantage without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or calculates technical analysis metrics (moving averages) from existing financial data without modifying, deleting, or executing external operations. It falls squarely within the Read category as it provides data analysis and calculations based on historical price data.
From the tool's definition Tool name 'technicalIndicators_mama' and description 'MESA Adaptive Moving Average (MAMA)' indicate a technical analysis indicator that retrieves or calculates moving averages from financial data.
Attacks that exploit this kind of access
MESA Adaptive Moving Average (MAMA). It is categorised as a Read tool in the MCP Avantage MCP Server, which means it retrieves data without modifying state.
Register the MCP Avantage MCP server in PolicyLayer and add a rule for technicalIndicators_mama: 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 MCP Avantage. Nothing to install.
technicalIndicators_mama 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 technicalIndicators_mama 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 technicalIndicators_mama. 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.
technicalIndicators_mama is provided by the MCP Avantage MCP server (missionsquad/mcp-avantage). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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