根據 scanner_type 掃描股票，並且依照 ascending 排序，回傳前 limit 個股票。
AI agents call scan_stocks 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.
Despite being part of a financial trading API server, scan_stocks performs only data retrieval and filtering. It queries stock information based on criteria and returns a limited sorted result set. No positions are opened, closed, or modified; no trades are executed; no money is moved. The tool's function is informational scanning, equivalent to searching a database.
From the tool's definition Tool scans stocks and returns results sorted and limited (scan_stocks: '根據 scanner_type 掃描股票，並且依照 ascending 排序，回傳前 limit 個股票' - 'scans stocks by scanner_type, sorts by ascending, returns top limit results').
Documented attack patterns abuse exactly the kind of access scan_stocks 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 scan_stocks:
{
"version": "1",
"default": "deny",
"tools": {
"scan_stocks": {}
}
}scan_stocks 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.
根據 scanner_type 掃描股票，並且依照 ascending 排序，回傳前 limit 個股票。. 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 scan_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 Shioaji. Nothing to install.
scan_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 scan_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 scan_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.
scan_stocks 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.