[Volatility / ATR / RV] ボラティリティ指標（volatility / ATR / realized vol）を算出。RV・ATR・Parkinson・Garman-Klass・Rogers-Satchell。年率換算対応。aggregates.atr は Wilder ATR（RMA ベース、period=${WILDER_ATR_PERIOD}、TradingView・MT4 標準と一致）。ローリングではボラ変化を RV / Parkinson で追跡してください。
AI agents call get_volatility_metrics to retrieve information from Bitbank without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Even though get_volatility_metrics only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
[Volatility / ATR / RV] ボラティリティ指標（volatility / ATR / realized vol）を算出。RV・ATR・Parkinson・Garman-Klass・Rogers-Satchell。年率換算対応。aggregates.atr は Wilder ATR（RMA ベース、period=${WILDER_ATR_PERIOD}、TradingView・MT4 標準と一致）。ローリングではボラ変化を RV / Parkinson で追跡してください。. It is categorised as a Read tool in the Bitbank MCP Server, which means it retrieves data without modifying state.
Register the Bitbank MCP server in PolicyLayer and add a rule for get_volatility_metrics: 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 Bitbank. Nothing to install.
get_volatility_metrics 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 get_volatility_metrics 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 get_volatility_metrics. 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.
get_volatility_metrics is provided by the Bitbank MCP server (tjackiet/bitbank-lab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.