get_macd
AI agents call get_macd to retrieve information from MCP YFinance Stock Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
MACD is a standard technical analysis indicator that is computed from historical price data. The 'get_' prefix and clustering with other analytical read tools (moving averages, RSI, Bollinger Bands) indicates this retrieves pre-calculated or computed indicator values without modifying any data. There is no evidence of write, execute, destructive, or financial operations.
From the tool's definition Tool name 'get_macd' suggests retrieval of MACD (Moving Average Convergence Divergence) technical indicator data.
Attacks that exploit this kind of access
get_macd. It is categorised as a Read tool in the MCP YFinance Stock Server MCP Server, which means it retrieves data without modifying state.
Register the MCP YFinance Stock Server MCP server in PolicyLayer and add a rule for get_macd: 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 YFinance Stock Server. Nothing to install.
get_macd 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_macd 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_macd. 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_macd is provided by the MCP YFinance Stock Server MCP server (sauniket/mcp-yfinance-server). 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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