Get basic information about a stock including current price, market cap, and key metrics.
AI agents call get_stock_info to retrieve information from Financial Stock Market 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—fetching and displaying stock metrics without creating, modifying, deleting, or executing any operations. No side effects or state changes occur. Even in an AI misuse scenario, the blast radius is minimal: an agent could only retrieve publicly available market data. The guardrails explicitly prevent harmful uses like investment advice.
From the tool's definition Tool retrieves 'basic information about a stock including current price, market cap, and key metrics' with no modification capabilities.
Attacks that exploit this kind of access
Get basic information about a stock including current price, market cap, and key metrics. It is categorised as a Read tool in the Financial Stock Market MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Financial Stock Market MCP Server MCP server in PolicyLayer and add a rule for get_stock_info: 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 Financial Stock Market MCP Server. Nothing to install.
get_stock_info 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_stock_info 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_stock_info. 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_stock_info is provided by the Financial Stock Market MCP Server MCP server (nataliecheong/mcp_for_simple_financial_stock_market). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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