company_events

THE RISK

Low Risk

Why company_events needs a policy

This tool queries and returns historical/scheduled company event data without modifying, deleting, or executing operations. It is purely informational retrieval with no destructive, financial transaction, or code execution capabilities. The low severity reflects minimal blast radius if misused by an AI agent—worst case is accessing public market information.

From the tool's definition Tool retrieves company events (dividends, AGM, earnings) with no side effects. Parameters are read-only: symbol (ticker) and source (data provider selection). Description uses verb 'Get' indicating data retrieval only.

Documented attack patterns abuse exactly the kind of access company_events gives an agent:

POLICY

How to control company_events

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 company_events:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "company_events": {}
  }
}

company_events is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register VNStock Agent MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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FAQ

Questions about company_events

What does the company_events tool do? +

Get company events (dividends, AGM, earnings, etc). Args: symbol: Stock ticker symbol (e.g. VNM, FPT, ACB) 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.

How do I enforce a policy on company_events? +

Register the VNStock Agent MCP Server MCP server in PolicyLayer and add a rule for company_events: 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.

What risk level is company_events? +

company_events is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit company_events? +

Yes. Add a rate_limit block to the company_events 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.

How do I block company_events completely? +

Set action: deny in the PolicyLayer policy for company_events. 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.

What MCP server provides company_events? +

company_events 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.

Enforce policy on every VNStock Agent MCP Server tool call.

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.

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