# modify_position_margin Manually add or reduce margin for an isolated margin position. Use positive values to add margin (reduce liquidation risk) or negative values to reduce margin. Agent View of the PolicyLayer registry record for `modify_position_margin`. HTML page: https://policylayer.com/tools/bcusack-bybit-py-mcp/modify-position-margin ## Facts - Tool: `modify_position_margin` - Server: Bybit MCP Server (`bcusack/bybit-py-mcp`) — https://policylayer.com/tools/bcusack-bybit-py-mcp.md - Homepage: https://github.com/BCusack/bybit-py-mcp - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "modify_position_margin", "arguments": {} } } ``` ## Why modify_position_margin is rated Medium This tool modifies margin allocation for a trading position, which is a reversible write operation affecting financial risk exposure. While it moves funds within margin accounts, it does not directly execute trades or move money externally. However, reducing margin can increase liquidation risk significantly, making misuse high-severity. From the tool's own definition: "Manually add or reduce margin for an isolated margin position. Use positive values to add margin (reduce liquidation risk) or negative values to reduce margin." ## Use case AI agents use modify_position_margin to create or update resources in Bybit MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Bybit MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Bybit MCP Server: ```json { "version": "1", "default": "deny", "tools": { "modify_position_margin": { "limits": [ { "counter": "modify_position_margin_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Bybit MCP Server (35) - `batch_cancel_order` — Destructive — https://policylayer.com/tools/bcusack-bybit-py-mcp/batch-cancel-order.md - `cancel_all_orders` — Destructive — https://policylayer.com/tools/bcusack-bybit-py-mcp/cancel-all-orders.md - `cancel_order` — Destructive — https://policylayer.com/tools/bcusack-bybit-py-mcp/cancel-order.md - `set_leverage` — Execute — https://policylayer.com/tools/bcusack-bybit-py-mcp/set-leverage.md - `switch_cross_isolated_margin` — Execute — https://policylayer.com/tools/bcusack-bybit-py-mcp/switch-cross-isolated-margin.md - `batch_amend_order` — Financial — https://policylayer.com/tools/bcusack-bybit-py-mcp/batch-amend-order.md - `batch_place_order` — Financial — https://policylayer.com/tools/bcusack-bybit-py-mcp/batch-place-order.md - `place_order` — Financial — https://policylayer.com/tools/bcusack-bybit-py-mcp/place-order.md - `place_trigger_order` — Financial — https://policylayer.com/tools/bcusack-bybit-py-mcp/place-trigger-order.md - `set_trading_stop` — Financial — https://policylayer.com/tools/bcusack-bybit-py-mcp/set-trading-stop.md - `get_account_info` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-account-info.md - `get_closed_pnl` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-closed-pnl.md - `get_funding_rate_history` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-funding-rate-history.md - `get_index_price_kline` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-index-price-kline.md - `get_instruments_info` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-instruments-info.md - `get_insurance` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-insurance.md - `get_kline` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-kline.md - `get_long_short_ratio` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-long-short-ratio.md - `get_mark_price_kline` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-mark-price-kline.md - `get_open_closed_orders` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-open-closed-orders.md - `get_open_interest` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-open-interest.md - `get_order_book` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-order-book.md - `get_order_history` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-order-history.md - `get_position_info` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-position-info.md - `get_premium_index_price_kline` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-premium-index-price-kline.md - `get_recent_trades` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-recent-trades.md - `get_risk_limit` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-risk-limit.md - `get_server_time` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-server-time.md - `get_single_coin_balance` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-single-coin-balance.md - `get_tickers` — Read — https://policylayer.com/tools/bcusack-bybit-py-mcp/get-tickers.md - …and 5 more: https://policylayer.com/tools/bcusack-bybit-py-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=bcusack-bybit-py-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/bcusack-bybit-py-mcp