Get real-time stock quote with price, volume, change, and key metrics. Args: symbol: Ticker symbol (e.g., AAPL, MSFT)
AI agents call stock_quote to retrieve information from Trading Skills without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries market data (price, volume, change, metrics) with no side effects. It is a straightforward read operation that returns publicly available information. Misuse by an AI agent would be limited to requesting unnecessary quotes or wasting API calls, posing minimal risk.
From the tool's definition Tool description states 'Get real-time stock quote with price, volume, change, and key metrics' — a pure data retrieval operation. The argument is a simple ticker symbol with no capability to modify, execute, or delete data.
Documented attack patterns abuse exactly the kind of access stock_quote gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trading Skills, and nothing reaches the server without passing your rules. This is the rule we recommend for stock_quote:
{
"version": "1",
"default": "deny",
"tools": {
"stock_quote": {}
}
}stock_quote is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get real-time stock quote with price, volume, change, and key metrics. Args: symbol: Ticker symbol (e.g., AAPL, MSFT). It is categorised as a Read tool in the Trading Skills MCP Server, which means it retrieves data without modifying state.
Register the Trading Skills MCP server in PolicyLayer and add a rule for stock_quote: 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 Trading Skills. Nothing to install.
stock_quote 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 stock_quote 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 stock_quote. 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.
stock_quote is provided by the Trading Skills MCP server (staskh/trading_skills). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 35 Trading Skills tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
35 Trading Skills tools catalogued and risk-classified — across an index of 42,500+ MCP servers.