AI agents call get_moving_averages 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.
This is a data retrieval tool that calculates and returns technical indicators (moving averages) based on historical price data. It has no side effects, does not modify data, does not execute arbitrary code, and does not involve financial transactions. The empty description prevents full certainty, but the naming pattern is consistent with read-only query tools like 'get_all_stock', 'get_balance_data', etc.
From the tool's definition Tool name 'get_moving_averages' indicates retrieval of calculated moving average data for stocks. Server context confirms it queries Chinese A-share stock data including historical prices.
Attacks that exploit this kind of access
get_moving_averages. 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_moving_averages: 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_moving_averages 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_moving_averages 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_moving_averages. 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_moving_averages 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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