# update_watchlist Update an existing watchlist. Agent View of the PolicyLayer registry record for `update_watchlist`. HTML page: https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/update-watchlist ## Facts - Tool: `update_watchlist` - Server: Alpaca MCP Server (`cliffsgpt/alpaca-mcp-clone`) — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone.md - Homepage: https://github.com/CliffsGPT/Alpaca-MCP-Clone - 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": "update_watchlist", "arguments": {} } } ``` ## Why update_watchlist is rated Medium This tool modifies data (a watchlist) but does not involve financial transactions, execute arbitrary code, or irreversibly destroy data. While the server context involves financial trading, this specific tool only updates a user's watch list—a benign organizational feature. The blast radius of misuse is limited to unauthorized changes to the user's watchlist preferences, with no financial or operational impact. From the tool's own definition: "Tool name 'update_watchlist' and description 'Update an existing watchlist' indicates modification of watchlist data, which is a reversible write operation. Watchlists are non-financial metadata used for organizing securities of interest." ## Use case AI agents use update_watchlist to create or update resources in Alpaca MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Alpaca MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Alpaca MCP Server: ```json { "version": "1", "default": "deny", "tools": { "update_watchlist": { "limits": [ { "counter": "update_watchlist_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Alpaca MCP Server (30) - `cancel_all_orders` — Destructive — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/cancel-all-orders.md - `cancel_order_by_id` — Destructive — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/cancel-order-by-id.md - `close_all_positions` — Destructive — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/close-all-positions.md - `exercise_options_position` — Financial — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/exercise-options-position.md - `place_crypto_order` — Financial — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/place-crypto-order.md - `place_option_market_order` — Financial — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/place-option-market-order.md - `place_stock_order` — Financial — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/place-stock-order.md - `get_account_info` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-account-info.md - `get_all_assets` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-all-assets.md - `get_asset_info` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-asset-info.md - `get_corporate_announcements` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-corporate-announcements.md - `get_crypto_bars` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-crypto-bars.md - `get_crypto_quotes` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-crypto-quotes.md - `get_market_calendar` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-market-calendar.md - `get_market_clock` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-market-clock.md - `get_open_position` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-open-position.md - `get_option_contracts` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-option-contracts.md - `get_option_latest_quote` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-option-latest-quote.md - `get_option_snapshot` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-option-snapshot.md - `get_orders` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-orders.md - `get_positions` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-positions.md - `get_stock_bars` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-bars.md - `get_stock_latest_bar` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-latest-bar.md - `get_stock_latest_trade` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-latest-trade.md - `get_stock_quote` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-quote.md - `get_stock_snapshot` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-snapshot.md - `get_stock_trades` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-stock-trades.md - `get_watchlists` — Read — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/get-watchlists.md - `close_position` — Write — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/close-position.md - `create_watchlist` — Write — https://policylayer.com/tools/cliffsgpt-alpaca-mcp-clone/create-watchlist.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=cliffsgpt-alpaca-mcp-clone · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/cliffsgpt-alpaca-mcp-clone