Minus Directional Indicator (-DI)
AI agents call technicalIndicators_minusDI 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 purely retrieves and computes a read-only technical indicator metric based on historical price data. It has no side effects on data, does not execute code or commands, does not modify any state, and does not move money or create financial obligations. It is a classic 'Read' category tool used for financial data analysis.
From the tool's definition The tool is named 'technicalIndicators_minusDI' and described as 'Minus Directional Indicator (-DI)'. The Minus Directional Indicator is a technical analysis indicator that reads and calculates directional movement in price data.
Attacks that exploit this kind of access
Minus Directional Indicator (-DI). 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_minusDI: 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_minusDI 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_minusDI 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_minusDI. 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_minusDI 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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