AI agents use option_amend_order to create or update resources in Okx Trade — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Okx Trade environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
newPx | string | — | New price |
newSz | string | — | New contracts count |
ordId | string | — | |
instId | string | Yes | e.g. BTC-USD-241227-50000-C |
clOrdId | string | — |
Parameters from the server's own tool schema.
This tool modifies an existing options order by changing its price and/or size. While it is technically a Write operation (modifying an existing order), it operates in a financial trading context. However, since the order is still unfilled and no money has moved yet, it does not directly execute a financial transaction — it only amends a pending order.
From the tool's definition Amend an unfilled OPTION order (price and/or size)
Attacks that exploit this kind of access
Amend an unfilled OPTION order (price and/or size). Provide ordId or clOrdId. To modify attached TP/SL, use option_amend_algo_order with the algoId from option_get_algo_orders. It is categorised as a Write tool in the Okx Trade MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
option_amend_order accepts 5 parameters: newPx, newSz, 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_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 Okx Trade. Nothing to install.
option_amend_order is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the option_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.
Set action: deny in the PolicyLayer policy for option_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.
option_amend_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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