copy_rates_from
AI agents call copy_rates_from 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.
The naming convention 'copy_rates_from' is consistent with MetaTrader 5's standard API function that retrieves historical OHLCV bar data starting from a specified date. This is a read-only market data retrieval operation. Confidence is reduced because the description is empty, but the sibling tool 'copy_rates_from_pos' and 'copy_rates_range' confirm this is a data-fetching family of tools.
From the tool's definition Tool name 'copy_rates_from' suggests copying/retrieving rate (price) data from MetaTrader 5; description is empty.
Attacks that exploit this kind of access
copy_rates_from. 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 copy_rates_from: 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.
copy_rates_from 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 copy_rates_from 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 copy_rates_from. 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.
copy_rates_from 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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