add_order

THE RISK

Critical Risk

Why add_order needs a policy

This tool places a real financial order on the Kraken exchange, directly committing financial obligations by buying or selling assets. Misuse could result in significant unintended financial transactions, making it a critical financial risk.

From the tool's definition Place a new Kraken Spot order (REST AddOrder)

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

POLICY

How to control add_order

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

policy.json

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

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

Create a free account and register Kraken Pro 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 Kraken Pro MCP tools

Financial cancel_all_orders_after Dead man's switch: set countdown to cancel ALL your orders after timeout_seconds. Financial amend_order Atomic amend in-place (keeps identifiers & queue priority where possible). Destructive cancel_order Cancel a particular open order (or set of orders). Read account_balance Get Account Balance: all cash balances, net of pending withdrawals. Read asset_info Asset metadata. Example assets: 'XBT,ETH,USDT' Read closed_orders closed_orders Read ohlc OHLC candles. Read order_book L2 order book (aggregated per price level).

All 17 Kraken Pro MCP tools →

Financial tools on other servers

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Go deeper

Critical-risk tools in Kraken Pro 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 add_order

What does the add_order tool do? +

Place a new Kraken Spot order (REST AddOrder). It is categorised as a Financial tool in the Kraken Pro MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on add_order? +

Register the Kraken Pro MCP server in PolicyLayer and add a rule for add_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 Kraken Pro MCP. Nothing to install.

What risk level is add_order? +

add_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 add_order? +

Yes. Add a rate_limit block to the add_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 add_order completely? +

Set action: deny in the PolicyLayer policy for add_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 add_order? +

add_order is provided by the Kraken Pro MCP server (oilst/kraken-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Kraken Pro MCP tool call.

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

CHECK YOUR STACK →