フィボナッチ・エクスパンション(エクステンション)水準を算出する（3点法）。
AI agents call mt5_fib_expansion 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 performs a mathematical calculation of Fibonacci expansion levels from three price points. It is purely analytical/computational with no side effects — it reads or derives data but does not modify trading state, execute orders, or move money.
From the tool's definition フィボナッチ・エクスパンション（エクステンション）水準を算出する（3点法）— 'calculates Fibonacci expansion/extension levels using 3-point method'
Attacks that exploit this kind of access
フィボナッチ・エクスパンション(エクステンション)水準を算出する（3点法）。. 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_fib_expansion: 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_fib_expansion 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_fib_expansion 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_fib_expansion. 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_fib_expansion 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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