AI agents call option_get_greeks 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 market data and analytical metrics for option contracts. It performs a read-only query operation that returns calculated greeks and volatility information. There is no mention of placing trades, modifying positions, transferring funds, or any side effects.
From the tool's definition Tool name is 'option_get_greeks' and description states 'Get implied volatility and Greeks' - uses the verb 'Get' indicating data retrieval.
Attacks that exploit this kind of access
Get implied volatility and Greeks (delta, gamma, theta, vega) for OPTION contracts by underlying. It is categorised as a Read tool in the Okx Trade MCP Server, which means it retrieves data without modifying state.
option_get_greeks 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_greeks: 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_greeks 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_greeks 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_greeks. 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_greeks 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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