Get total number of deals in history (native MT5 function).
AI agents call history_deals_total to retrieve information from MetaTrader 5 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 historical deal count information from MetaTrader 5, which is a read-only query operation with no side effects. While the server context involves financial trading, this specific tool only accesses historical data and does not move money, execute trades, or modify account state. It poses minimal risk as a standalone operation.
From the tool's definition Tool name 'history_deals_total' and description 'Get total number of deals in history' indicate a query operation that retrieves a count of historical trading deals without modifying, executing, or deleting data.
Attacks that exploit this kind of access
Get total number of deals in history (native MT5 function). It is categorised as a Read tool in the MetaTrader 5 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MetaTrader 5 MCP Server MCP server in PolicyLayer and add a rule for history_deals_total: 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 MetaTrader 5 MCP Server. Nothing to install.
history_deals_total 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 history_deals_total 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 history_deals_total. 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.
history_deals_total is provided by the MetaTrader 5 MCP Server MCP server (jorgearturoyap-debug/metatrader-5-for-chatgpt-desktop). 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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