AI agents call get_stock_basic 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 retrieves static, read-only data about securities. It has no side effects, makes no modifications to data, executes no commands, and performs no financial transactions. It is a simple data lookup operation similar to a GET request in REST APIs.
From the tool's definition The tool name is 'get_stock_basic' and it retrieves a 'Basic securities profile' by passing code or code_name parameters. The 'get' prefix and the retrieval-only nature (no modification, deletion, or execution) clearly indicate a read operation.
Attacks that exploit this kind of access
Basic securities profile. Pass code (e.g. 'sh.600519') OR code_name. 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_basic: 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_basic 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_basic 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_basic. 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_basic 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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