order-stock

THE RISK

Critical Risk

Why order-stock needs a policy

This tool directly executes stock buy/sell orders through a brokerage, committing real financial transactions. Misuse could result in unintended purchases or sales of securities, causing direct financial loss. This is unambiguously a Financial category tool with critical severity due to the potential for significant monetary impact.

From the tool's definition Order stock (buy/sell) from Korea Investment & Securities

Documented attack patterns abuse exactly the kind of access order-stock gives an agent:

POLICY

How to control order-stock

PolicyLayer is an MCP gateway — it sits between your AI agents and KIS REST API MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for order-stock:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "order-stock": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to order-stock is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register KIS REST API 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.

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EXPLORE

Related tools and policies

More KIS REST API MCP Server tools

Financial call-kis-api Call any collected KIS REST API by group/api_type using cataloged interface metadata Financial order-overseas-stock Order overseas stock (buy/sell) from Korea Investment & Securities Read get-kis-api-spec Get one KIS REST API spec with endpoint, TR_ID candidates, and request parameters Read inquery-balance Get current stock balance information from Korea Investment & Securities Read inquery-order-detail Get order detail from Korea Investment & Securities Read inquery-order-list Get daily order list from Korea Investment & Securities Read inquery-overseas-stock-price Get overseas stock price from Korea Investment & Securities Read inquery-stock-ask Get stock ask price from Korea Investment & Securities

All 15 KIS REST API MCP Server tools →

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Go deeper

Critical-risk tools in KIS REST API MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about order-stock

What does the order-stock tool do? +

Order stock (buy/sell) from Korea Investment & Securities. It is categorised as a Financial tool in the KIS REST API MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on order-stock? +

Register the KIS REST API MCP Server MCP server in PolicyLayer and add a rule for order-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 KIS REST API MCP Server. Nothing to install.

What risk level is order-stock? +

order-stock is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit order-stock? +

Yes. Add a rate_limit block to the order-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.

How do I block order-stock completely? +

Set action: deny in the PolicyLayer policy for order-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.

What MCP server provides order-stock? +

order-stock is provided by the KIS REST API MCP Server MCP server (migusdn/kis_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every KIS REST API MCP Server tool call.

Start from KIS REST API MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →