AI agents call get_us_historical_k_data to retrieve information from Stockreport without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical price/candlestick data for US stocks. It is a read-only query operation with no side effects. While the server handles financial data, this specific tool merely fetches historical information and does not execute trades, transfer funds, or modify any state. The blast radius of misuse is minimal—an agent could only retrieve historical market data that is typically public information.
From the tool's definition Tool name 'get_us_historical_k_data' and description '获取美股历史K线数据' (retrieve US stock historical K-line/candlestick data) indicates data retrieval only. No modification, deletion, execution, or financial transaction capabilities.
Documented attack patterns abuse exactly the kind of access get_us_historical_k_data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Stockreport, and nothing reaches the server without passing your rules. This is the rule we recommend for get_us_historical_k_data:
{
"version": "1",
"default": "deny",
"tools": {
"get_us_historical_k_data": {}
}
}get_us_historical_k_data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取美股历史K线数据. It is categorised as a Read tool in the Stockreport MCP Server, which means it retrieves data without modifying state.
Register the Stockreport MCP server in PolicyLayer and add a rule for get_us_historical_k_data: 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 Stockreport. Nothing to install.
get_us_historical_k_data 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_us_historical_k_data 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_us_historical_k_data. 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_us_historical_k_data is provided by the Stockreport MCP server (jamesdingai/stockreport-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Stockreport, 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.
34 Stockreport tools catalogued and risk-classified — across an index of 43,000+ MCP servers.