約定履歴。from_date/to_date は ISO8601。
AI agents call mt5_history_deals to retrieve information from MT5 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries historical deal/trade records from MetaTrader 5 within a specified date range. It is a read-only data retrieval operation with no side effects on accounts, positions, or orders.
From the tool's definition 約定履歴 (deal history) — retrieves historical deal records; from_date/to_date parameters indicate a time-range query for past data
Attacks that exploit this kind of access
約定履歴。from_date/to_date は ISO8601。. It is categorised as a Read tool in the MT5 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MT5 MCP Server MCP server in PolicyLayer and add a rule for mt5_history_deals: 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 MT5 MCP Server. Nothing to install.
mt5_history_deals 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 mt5_history_deals 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 mt5_history_deals. 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.
mt5_history_deals is provided by the MT5 MCP Server MCP server (junmt/mt5-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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