AI agents call get_stock_announcements 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.
This tool retrieves stock announcement data without modifying, deleting, or executing operations. The empty description is compensated by the clear naming convention and context of sibling tools which are all data-fetching utilities from a financial data service (baostock). No side effects or state changes occur.
From the tool's definition Tool name 'get_stock_announcements' and server purpose ('exposes...data endpoints') indicate data retrieval. Sibling tool 'download_stock_announcement' and others like 'get_balance_data', 'get_dividend_data' are all read-only queries of financial data.
Attacks that exploit this kind of access
get_stock_announcements. 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_stock_announcements: 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_stock_announcements 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_stock_announcements 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_stock_announcements. 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_stock_announcements 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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