AI agents call get_history_k_data to retrieve information from Ashare without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
K-line historical data retrieval is a standard read operation that queries financial time-series data without side effects. No data is created, modified, deleted, or executed. The pattern of sibling tools and the server's stated purpose (exposing data endpoints for retrieval) confirms this is a read-only data fetch operation.
From the tool's definition Tool name 'get_history_k_data' indicates retrieval of historical K-line (candlestick) data. The sibling tools on this server (get_balance_data, get_cash_flow_data, get_dividend_data, etc.) are all read-only data retrieval endpoints from baostock financial…
Attacks that exploit this kind of access
get_history_k_data. It is categorised as a Read tool in the Ashare MCP Server, which means it retrieves data without modifying state.
Register the Ashare MCP server in PolicyLayer and add a rule for get_history_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 Ashare. Nothing to install.
get_history_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_history_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_history_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_history_k_data is provided by the Ashare MCP server (maimai-hqw/ashare-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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