cancel_order
AI agents call cancel_order to permanently remove resources in IB Analytics MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
On an Interactive Brokers trading server, 'cancel_order' most likely cancels a pending order, which is an irreversible action (a cancelled order cannot be uncancelled). While it doesn't move money directly, cancelling an order can have significant financial consequences. The name strongly implies irreversible cancellation of a financial order.
From the tool's definition Tool name 'cancel_order' on a financial trading platform (Interactive Brokers); description is empty and uninformative.
Attacks that exploit this kind of access
cancel_order. It is categorised as a Destructive tool in the IB Analytics MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the IB Analytics MCP Server MCP server in PolicyLayer and add a rule for cancel_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 IB Analytics MCP Server. Nothing to install.
cancel_order is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cancel_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.
Set action: deny in the PolicyLayer policy for cancel_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.
cancel_order is provided by the IB Analytics MCP Server MCP server (knishioka/ib-sec-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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