AI agents call get_all_stock 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 queries and returns reference data about securities and their trading status. It performs no side effects, creates no data, executes no code, and has no irreversible consequences. The blast radius of misuse is minimal: an AI agent could only retrieve financial market reference information that is typically public. This is a canonical Read operation.
From the tool's definition The tool description states it retrieves 'All securities and their trading status on a given day' — a pure data retrieval operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
All securities and their trading status on a given day (default: latest. 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_all_stock: 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_all_stock 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_all_stock 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_all_stock. 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_all_stock 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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