ローソク足(OHLCV)を取得する。
AI agents call mt5_ohlcv 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 retrieves historical candlestick price data (OHLCV) from MetaTrader 5. It is a read-only data fetch operation with no side effects, no trading actions, and no data modification. Misuse has minimal blast radius as it only reads market data.
From the tool's definition ローソク足(OHLCV)を取得する — 'を取得する' means 'to retrieve/get'; OHLCV (Open, High, Low, Close, Volume) is market candlestick data
Attacks that exploit this kind of access
ローソク足(OHLCV)を取得する。. 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_ohlcv: 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_ohlcv 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_ohlcv 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_ohlcv. 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_ohlcv 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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