AI agents call get_option_price to retrieve information from IBKR-MCP-Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves option pricing information from Interactive Brokers. While the description is empty, the consistent naming convention with other Read-category tools on the server (all 'get_*' operations), combined with the server's stated purpose of enabling 'retrieval' of market data, strongly indicates this is a data retrieval operation.
From the tool's definition Tool name is 'get_option_price' and sibling tools on this server are all retrieval operations (get_account_summary, get_connection_status, get_portfolio, get_stock_price).
Documented attack patterns abuse exactly the kind of access get_option_price gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and IBKR-MCP-Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_option_price:
{
"version": "1",
"default": "deny",
"tools": {
"get_option_price": {}
}
}get_option_price is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_option_price. It is categorised as a Read tool in the IBKR-MCP-Server MCP Server, which means it retrieves data without modifying state.
Register the IBKR-MCP-Server MCP server in PolicyLayer and add a rule for get_option_price: 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 IBKR-MCP-Server. Nothing to install.
get_option_price 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 get_option_price 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 get_option_price. 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.
get_option_price is provided by the IBKR-MCP-Server MCP server (xiao81/ibkr-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from IBKR-MCP-Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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5 IBKR-MCP-Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.