AI agents call option_get_instruments to retrieve information from Okx Trade without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
uly | string | Yes | Underlying, e.g. BTC-USD or ETH-USD |
expTime | string | — | Filter by expiry date, e.g. 241227 |
Parameters from the server's own tool schema.
This tool retrieves and lists available option contract data without creating, modifying, deleting, or executing trades. It is purely informational and serves as a precursor to order placement, not the order placement itself. The action is read-only with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'option_get_instruments' and description 'List available OPTION contracts for a given underlying (option chain). Use to find valid instIds before placing orders' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List available OPTION contracts for a given underlying (option chain). Use to find valid instIds before placing orders. It is categorised as a Read tool in the Okx Trade MCP Server, which means it retrieves data without modifying state.
option_get_instruments accepts 2 parameters: uly, expTime. Required: uly. 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_get_instruments: 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_get_instruments is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the option_get_instruments 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_get_instruments. 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_get_instruments 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.
Teams ship this data inside their own products. See what a licence covers →