Get historical price data
AI agents call ig_get_historical_prices to retrieve information from IG Trading MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical pricing information without modifying, deleting, or executing any trades or financial transactions. It is a read-only query operation that poses minimal risk even if misused by an AI agent, as it cannot alter account state, positions, or financial obligations.
From the tool's definition Tool name 'ig_get_historical_prices' and description 'Get historical price data' indicate data retrieval with no side effects. The action is purely informational—querying past market data.
Attacks that exploit this kind of access
Get historical price data. It is categorised as a Read tool in the IG Trading MCP MCP Server, which means it retrieves data without modifying state.
Register the IG Trading MCP server in PolicyLayer and add a rule for ig_get_historical_prices: 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 IG Trading MCP. Nothing to install.
ig_get_historical_prices 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 ig_get_historical_prices 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 ig_get_historical_prices. 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.
ig_get_historical_prices is provided by the IG Trading MCP server (kea0811/ig-trading-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.
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