Get the annual income statement for a company.
AI agents call get_financials to retrieve information from Yahoo Finance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs data retrieval only—querying financial statements with no side effects, mutations, or external operations. Income statement data is publicly available market information. The blast radius of misuse is minimal; an agent could request excessive data but cannot modify financial records, execute code, or initiate transactions. Classified as Read with low severity and high confidence.
From the tool's definition Tool retrieves annual income statement data from Yahoo Finance via yfinance library. Description explicitly states 'Get' (retrieval), no modification or execution capability mentioned.
Attacks that exploit this kind of access
Get the annual income statement for a company. It is categorised as a Read tool in the Yahoo Finance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Yahoo Finance MCP Server MCP server in PolicyLayer and add a rule for get_financials: 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 Yahoo Finance MCP Server. Nothing to install.
get_financials 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_financials 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_financials. 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_financials is provided by the Yahoo Finance MCP Server MCP server (peidaqi/yfinance-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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