Search for stocks by company name or ticker symbol.
AI agents call search_stocks to retrieve information from StockQuotes MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a financial database to retrieve matching stock information based on search criteria. It does not execute code, modify data, delete records, or move money. The sibling tools (get_historical_data, get_stock_quote, get_stock_quotes) are all retrieval operations, consistent with this being a read-only data access service.
From the tool's definition Tool is named 'search_stocks' and described as 'Search for stocks by company name or ticker symbol.' The description uses only retrieval language ('search for') with no modification, deletion, or execution of code. It returns data without side effects.
Documented attack patterns abuse exactly the kind of access search_stocks gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and StockQuotes MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for search_stocks:
{
"version": "1",
"default": "deny",
"tools": {
"search_stocks": {}
}
}search_stocks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for stocks by company name or ticker symbol. It is categorised as a Read tool in the StockQuotes MCP MCP Server, which means it retrieves data without modifying state.
Register the StockQuotes MCP server in PolicyLayer and add a rule for search_stocks: 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 StockQuotes MCP. Nothing to install.
search_stocks 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 search_stocks 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 search_stocks. 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.
search_stocks is provided by the StockQuotes MCP server (lionelschiepers/stockquotes.mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from StockQuotes MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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4 StockQuotes MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.