Get the current price of a stock by its symbol
AI agents call get_stock_price to retrieve information from Shioaji 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 price information based on a symbol query. It has no side effects, does not execute trades, does not modify data, and does not move money. While it is part of a trading API server, the tool itself is purely informational and read-only in nature. The low severity reflects minimal risk even if misused, as it only exposes publicly available market data.
From the tool's definition Tool name 'get_stock_price' and description 'Get the current price of a stock by its symbol' indicate a read-only query operation that retrieves market data without modification or execution of trades.
Documented attack patterns abuse exactly the kind of access get_stock_price gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Shioaji, and nothing reaches the server without passing your rules. This is the rule we recommend for get_stock_price:
{
"version": "1",
"default": "deny",
"tools": {
"get_stock_price": {}
}
}get_stock_price is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the current price of a stock by its symbol. It is categorised as a Read tool in the Shioaji MCP Server, which means it retrieves data without modifying state.
Register the Shioaji MCP server in PolicyLayer and add a rule for get_stock_price: 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 Shioaji. Nothing to install.
get_stock_price 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_price 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_price. 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_price is provided by the Shioaji MCP server (sinotrade/mcp-server-shioaji). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Shioaji, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
3 Shioaji tools catalogued and risk-classified — across an index of 43,000+ MCP servers.