AI agents call stock_individual_basic_info to retrieve information from Stock Info Service without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves basic information about individual stocks. The 'get' semantic, stock data context, and sibling patterns (all read operations like 'get_finance_news', 'get_stock_info') confirm this is a Read operation with no side effects. The empty description slightly reduces confidence, but the name and server purpose clearly indicate data retrieval only.
From the tool's definition Tool name 'stock_individual_basic_info' and server context ('Stock Info Service' provides 'stock data including historical prices, fundamental information') indicate retrieval of stock information.
Documented attack patterns abuse exactly the kind of access stock_individual_basic_info gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Stock Info Service, and nothing reaches the server without passing your rules. This is the rule we recommend for stock_individual_basic_info:
{
"version": "1",
"default": "deny",
"tools": {
"stock_individual_basic_info": {}
}
}stock_individual_basic_info is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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stock_individual_basic_info. It is categorised as a Read tool in the Stock Info Service MCP Server, which means it retrieves data without modifying state.
Register the Stock Info Service MCP server in PolicyLayer and add a rule for stock_individual_basic_info: 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 Stock Info Service. Nothing to install.
stock_individual_basic_info 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 stock_individual_basic_info 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 stock_individual_basic_info. 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.
stock_individual_basic_info is provided by the Stock Info Service MCP server (tddt/stock_info_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Stock Info Service, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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7 Stock Info Service tools catalogued and risk-classified — across an index of 43,000+ MCP servers.