get_minus_dm
AI agents call get_minus_dm to retrieve information from AlphaVantage MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'get_' prefix combined with context of sibling tools that retrieve technical indicators and financial data suggests this tool retrieves pre-calculated MINUS_DM indicator values without modifying data. No execution, modification, or financial transaction capability is evident. Low severity as it only queries financial market data.
From the tool's definition Tool name 'get_minus_dm' with 'get_' prefix and sibling tools (get_ad, get_adosc, get_adx, etc.) that are all technical indicator retrievers. MINUS_DM (Minus Directional Movement) is a standard technical analysis indicator.
Attacks that exploit this kind of access
get_minus_dm. It is categorised as a Read tool in the AlphaVantage MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AlphaVantage MCP Server MCP server in PolicyLayer and add a rule for get_minus_dm: 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 AlphaVantage MCP Server. Nothing to install.
get_minus_dm 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 get_minus_dm 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 get_minus_dm. 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.
get_minus_dm is provided by the AlphaVantage MCP Server MCP server (lifejwang11/alphavantage-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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