Get current quotes for multiple stocks at once.
AI agents call get_multiple_quotes to retrieve information from yfinance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves current stock quotes—a read-only query operation with no side effects. It neither modifies data, executes code, deletes information, nor moves money. The blast radius of misuse is minimal; an agent could only retrieve publicly available financial data.
From the tool's definition Tool name 'get_multiple_quotes' and description 'Get current quotes for multiple stocks at once' indicate retrieval of real-time stock price data with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
Get current quotes for multiple stocks at once. It is categorised as a Read tool in the yfinance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the yfinance MCP Server MCP server in PolicyLayer and add a rule for get_multiple_quotes: 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 yfinance MCP Server. Nothing to install.
get_multiple_quotes 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_multiple_quotes 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_multiple_quotes. 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_multiple_quotes is provided by the yfinance MCP Server MCP server (torosent/yfinance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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