List available option expiration dates from Interactive Brokers. Requires TWS or IB Gateway running locally. Args: symbol: Ticker symbol port: IB port (7496 for live, 7497 for paper)
AI agents call ib_option_expiries to retrieve information from Trading Skills without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves reference data (option expiration dates) for a given symbol from an Interactive Brokers account. It has no side effects, does not modify data, execute code, delete data, or move money. It is purely informational and suitable for market analysis queries. The low severity reflects minimal blast radius if misused—an agent querying this repeatedly causes no financial or operational harm.
From the tool's definition Tool lists available option expiration dates from Interactive Brokers; uses query parameters (symbol, port) to retrieve data. Described as 'List available' which is a read operation with no modification capability.
Documented attack patterns abuse exactly the kind of access ib_option_expiries gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trading Skills, and nothing reaches the server without passing your rules. This is the rule we recommend for ib_option_expiries:
{
"version": "1",
"default": "deny",
"tools": {
"ib_option_expiries": {}
}
}ib_option_expiries is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List available option expiration dates from Interactive Brokers. Requires TWS or IB Gateway running locally. Args: symbol: Ticker symbol port: IB port (7496 for live, 7497 for paper). It is categorised as a Read tool in the Trading Skills MCP Server, which means it retrieves data without modifying state.
Register the Trading Skills MCP server in PolicyLayer and add a rule for ib_option_expiries: 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 Trading Skills. Nothing to install.
ib_option_expiries 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 ib_option_expiries 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 ib_option_expiries. 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.
ib_option_expiries is provided by the Trading Skills MCP server (staskh/trading_skills). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 35 Trading Skills tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
35 Trading Skills tools catalogued and risk-classified — across an index of 42,500+ MCP servers.