[Margin Positions / 信用建玉一覧] 信用取引の保有建玉一覧（通貨ペア・方向・数量・評価額・平均取得価格）を取得。追証・不足金がある場合はアラート表示。通貨ペアでフィルタ可能。Private API。
AI agents call get_margin_positions to retrieve information from Bitbank Lab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite operating on sensitive financial margin account data (which explains the 'high' severity due to information sensitivity and potential for misuse in decision-making), the tool's actual capability is purely informational—it retrieves existing position data without creating, modifying, closing, or liquidating positions.
From the tool's definition The tool retrieves 'margin positions' (信用建玉一覧) including currency pairs, direction, quantity, valuation, and average acquisition price. The description explicitly states it 'gets' (取得) this data and can filter by currency pair.
Attacks that exploit this kind of access
[Margin Positions / 信用建玉一覧] 信用取引の保有建玉一覧（通貨ペア・方向・数量・評価額・平均取得価格）を取得。追証・不足金がある場合はアラート表示。通貨ペアでフィルタ可能。Private API。. It is categorised as a Read tool in the Bitbank Lab MCP Server, which means it retrieves data without modifying state.
Register the Bitbank Lab MCP server in PolicyLayer and add a rule for get_margin_positions: 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 Lab. Nothing to install.
get_margin_positions 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_margin_positions 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_margin_positions. 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_margin_positions is provided by the Bitbank Lab MCP server (tjackiet/bitbank-genesis-mcp-server-http-archive). 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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