create_watchlist

Creates a new watchlist with specified symbols.

SERVERAlpaca MCP Server SOURCEcliffsgpt/alpaca-mcp-clone

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cliffsgpt-alpaca-mcp-clone/create-watchlist.md

WHAT IT DOES

What create_watchlist does on Alpaca MCP Server

AI agents use create_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.

RISK

Why create_watchlist is rated Medium

This tool creates a new watchlist, which is a write operation that modifies user data by adding a new entity. It is reversible and has no financial impact, no code execution, and causes no destruction. While it exists in a financial trading context (Alpaca), the watchlist itself is merely a curated list of symbols for reference—creating it does not move money, execute trades, or trigger irreversible actions.

From the tool's definition Tool name 'create_watchlist' and description 'Creates a new watchlist with specified symbols' indicate data creation that is reversible (watchlists can be deleted or modified).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_watchlist safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Alpaca MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_watchlist, this is the rule to start with:

create_watchlist Rate-limited

create_watchlist stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_watchlist": {
      "limits": [
        {
          "counter": "create_watchlist_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Alpaca MCP Server, apply this rule, and every create_watchlist call is checked against it from then on.

FAQ

Questions about create_watchlist

What does the create_watchlist tool do? +

Creates a new watchlist with specified symbols. It is categorised as a Write tool in the Alpaca MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_watchlist? +

Register the Alpaca MCP Server MCP server in PolicyLayer and add a rule for create_watchlist: 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 Alpaca MCP Server. Nothing to install.

What risk level is create_watchlist? +

create_watchlist is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_watchlist? +

Yes. Add a rate_limit block to the create_watchlist 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.

How do I block create_watchlist completely? +

Set action: deny in the PolicyLayer policy for create_watchlist. 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.

What MCP server provides create_watchlist? +

create_watchlist is provided by the Alpaca MCP Server MCP server (cliffsgpt/alpaca-mcp-clone). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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