Cancel an unfilled OPTION order. Provide ordId or clOrdId.
AI agents call option_cancel_order to permanently remove resources in Okx Trade — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
| Parameter | Type | Required | Description |
|---|---|---|---|
ordId | string | — | |
instId | string | Yes | e.g. BTC-USD-241227-50000-C |
clOrdId | string | — |
Parameters from the server's own tool schema.
While order cancellation might seem reversible (one could place a new order), the specific order being cancelled is permanently removed and cannot be restored to its prior state. The action is irreversible in the strict sense required for the Destructive category. Additionally, this occurs on a financial exchange where cancelling orders can have significant market and financial consequences.
From the tool's definition 'Cancel an unfilled OPTION order' - this operation irreversibly terminates an active order, preventing its execution and removing it from the order book.
Attacks that exploit this kind of access
Cancel an unfilled OPTION order. Provide ordId or clOrdId. It is categorised as a Destructive tool in the Okx Trade MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
option_cancel_order accepts 3 parameters: ordId, instId, clOrdId. Required: instId. The full parameter table on this page comes from the server's own tool schema.
Register the Okx Trade MCP server in PolicyLayer and add a rule for option_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 Okx Trade. Nothing to install.
option_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 option_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 option_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.
option_cancel_order is provided by the Okx Trade MCP server (@okx_ai/okx-trade-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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