AI agents call get_backtest_results to retrieve information from MCP MetaTrader 4 Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves backtest results—analytical data from past simulations. It has no side effects, does not modify account state, does not execute orders, and does not delete data. It is purely a read operation that queries stored backtest metadata and performance metrics.
From the tool's definition Tool name 'get_backtest_results' and description 'Get results from the last backtest' indicate a retrieval operation that queries historical test data without modifying, deleting, or executing any trades or code.
Documented attack patterns abuse exactly the kind of access get_backtest_results gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP MetaTrader 4 Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_backtest_results:
{
"version": "1",
"default": "deny",
"tools": {
"get_backtest_results": {}
}
}get_backtest_results is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get results from the last backtest. It is categorised as a Read tool in the MCP MetaTrader 4 Server MCP Server, which means it retrieves data without modifying state.
Register the MCP MetaTrader 4 Server MCP server in PolicyLayer and add a rule for get_backtest_results: 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 MCP MetaTrader 4 Server. Nothing to install.
get_backtest_results 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_backtest_results 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_backtest_results. 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_backtest_results is provided by the MCP MetaTrader 4 Server MCP server (8nite/metatrader-4-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP MetaTrader 4 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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14 MCP MetaTrader 4 Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.