AI agents call get_performance_express_report to retrieve information from A Share without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to retrieve or fetch a performance express report—a read operation consistent with the server's purpose of querying Chinese A-share stock data. No write, delete, execution, or financial transaction capability is evident from the name or server scope. Confidence is slightly reduced due to empty tool description, but the naming convention and sibling tools strongly suggest a read-only query operation.
From the tool's definition Tool name 'get_performance_express_report' suggests retrieval of existing report data. Server description indicates tools 'query' and 'get' financial data (e.g., 'get_all_stock', 'get_balance_data', 'get_cash_flow_data').
Attacks that exploit this kind of access
get_performance_express_report. It is categorised as a Read tool in the A Share MCP Server, which means it retrieves data without modifying state.
Register the A Share MCP server in PolicyLayer and add a rule for get_performance_express_report: 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 A Share. Nothing to install.
get_performance_express_report 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_performance_express_report 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_performance_express_report. 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_performance_express_report is provided by the A Share MCP server (kissjerryfan/mcp_server). 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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