Get real-time market data for a symbol
AI agents call get_market_data to retrieve information from Interactive Brokers 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 real-time market data—quotes, prices, and other market information for a given symbol. It has no side effects, does not modify account state, does not execute orders, and does not move money. It is a pure read operation. Even in the context of a financial trading platform, querying market data poses minimal risk as it cannot directly cause financial loss or unintended transactions.
From the tool's definition Tool name 'get_market_data' and description 'Get real-time market data for a symbol' indicate retrieval of market data without modification or execution of trades.
Attacks that exploit this kind of access
Get real-time market data for a symbol. It is categorised as a Read tool in the Interactive Brokers MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Interactive Brokers MCP Server MCP server in PolicyLayer and add a rule for get_market_data: 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 Interactive Brokers MCP Server. Nothing to install.
get_market_data 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_market_data 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_market_data. 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_market_data is provided by the Interactive Brokers MCP Server MCP server (jinyiabc/ibkr-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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