amend_order · Mcp Kraken MCP: Risk & Policy

WHAT IT DOES

What amend_order does on Mcp Kraken

AI agents use amend_order to create or update resources in Mcp Kraken — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Kraken environment.

WHY IT NEEDS A POLICY

Why amend_order needs a policy

Amending an order modifies an existing trading order on the Kraken exchange. This is a Write operation as it changes existing data (the order parameters) rather than creating a new one or deleting it.

From the tool's definition Amend an existing order in-place (preserves queue priority where

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

amend_order Rate-limited

amend_order stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "amend_order": {
      "limits": [
        {
          "counter": "amend_order_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Kraken, so you can run agents against it safely.

FAQ

Questions about amend_order

What does the amend_order tool do? +

Amend an existing order in-place (preserves queue priority where. It is categorised as a Write tool in the Mcp Kraken MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on amend_order? +

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

What risk level is amend_order? +

amend_order is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit amend_order? +

Yes. Add a rate_limit block to the amend_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 amend_order completely? +

Set action: deny in the PolicyLayer policy for amend_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 amend_order? +

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