tiger_place_order

THE RISK

Critical Risk

Why tiger_place_order needs a policy

Placing an order through a brokerage API directly commits financial obligations by buying or selling securities. Even with an empty description, the tool name combined with the server context (Tiger Brokers trading platform with order execution) and sibling tools (tiger_cancel_order) make it highly evident this tool executes real financial trades. Misuse could result in significant unintended financial transactions.

From the tool's definition Tool name 'tiger_place_order' on a server described as enabling 'trading...order execution' through Tiger Brokers API. Sibling tool 'tiger_cancel_order' confirms this server handles real brokerage orders.

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

POLICY

How to control tiger_place_order

PolicyLayer is an MCP gateway — it sits between your AI agents and Tiger MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for tiger_place_order:

policy.json

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

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

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

GATE THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Tiger MCP tools

Financial tiger_modify_order tiger_modify_order Destructive tiger_cancel_order tiger_cancel_order Destructive tiger_remove_account tiger_remove_account Write tiger_add_account tiger_add_account Write tiger_set_default_data_account tiger_set_default_data_account Write tiger_set_default_trading_account tiger_set_default_trading_account Read tiger_get_account_info tiger_get_account_info Read tiger_get_account_status tiger_get_account_status

All 23 Tiger MCP tools →

Financial tools on other servers

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Go deeper

Critical-risk tools in Tiger MCP → 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 tiger_place_order

What does the tiger_place_order tool do? +

tiger_place_order. It is categorised as a Financial tool in the Tiger MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on tiger_place_order? +

Register the Tiger MCP server in PolicyLayer and add a rule for tiger_place_order: 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 Tiger MCP. Nothing to install.

What risk level is tiger_place_order? +

tiger_place_order 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 tiger_place_order? +

Yes. Add a rate_limit block to the tiger_place_order 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 tiger_place_order completely? +

Set action: deny in the PolicyLayer policy for tiger_place_order. 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 tiger_place_order? +

tiger_place_order is provided by the Tiger MCP server (luxiaolei/tiger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Tiger MCP tool call.

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

CHECK YOUR STACK →