Get intraday (today's) trading data for a stock. Args: symbol: Stock ticker symbol (e.g. VNM, FPT, ACB) page_size: Number of records to return (default: 100) source: Data source - VCI or KBS (default: VCI)
AI agents call stock_intraday to retrieve information from VNStock Agent MCP Server 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 stock market data without any side effects. The parameters are all inputs to filter/paginate a read operation. It cannot create, modify, delete data, or execute code/commands. It poses minimal risk as it only exposes publicly available market information.
From the tool's definition Tool 'Get intraday (today's) trading data for a stock' retrieves historical/current stock market data with read-only parameters (symbol, page_size, source). No modification, deletion, or execution of external operations.
Documented attack patterns abuse exactly the kind of access stock_intraday gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and VNStock Agent MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stock_intraday:
{
"version": "1",
"default": "deny",
"tools": {
"stock_intraday": {}
}
} stock_intraday is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get intraday (today's) trading data for a stock. Args: symbol: Stock ticker symbol (e.g. VNM, FPT, ACB) page_size: Number of records to return (default: 100) source: Data source - VCI or KBS (default: VCI). It is categorised as a Read tool in the VNStock Agent MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VNStock Agent MCP Server MCP server in PolicyLayer and add a rule for stock_intraday: 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 VNStock Agent MCP Server. Nothing to install.
stock_intraday 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_intraday 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_intraday. 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_intraday is provided by the VNStock Agent MCP Server MCP server (mrgoonie/vnstock-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from VNStock Agent MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
21 VNStock Agent MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.