unified_watchlists

Gets all watchlists aggregated across supported brokers.

SERVEROpen Stocks MCP SOURCEopen-agent-tools/open-stocks-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/open-agent-tools-open-stocks-mcp/unified-watchlists.md

WHAT IT DOES

What unified_watchlists does on Open Stocks MCP

AI agents call unified_watchlists to retrieve information from Open Stocks MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why unified_watchlists is rated Low

This tool retrieves watchlist data from multiple brokers without creating, modifying, deleting, or executing any financial transactions. It is purely informational and has no side effects. Even though it operates in a financial domain, the action itself is a simple data query, making it a Read operation with low severity.

From the tool's definition Tool description states 'Gets all watchlists aggregated across supported brokers' — a retrieval operation with no modification, deletion, or execution of trades. The verb 'Gets' indicates read-only data access.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unified_watchlists safely

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

unified_watchlists Allowed

unified_watchlists is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unified_watchlists": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about unified_watchlists

What does the unified_watchlists tool do? +

Gets all watchlists aggregated across supported brokers. It is categorised as a Read tool in the Open Stocks MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on unified_watchlists? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for unified_watchlists: 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 Open Stocks MCP. Nothing to install.

What risk level is unified_watchlists? +

unified_watchlists is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit unified_watchlists? +

Yes. Add a rate_limit block to the unified_watchlists 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 unified_watchlists completely? +

Set action: deny in the PolicyLayer policy for unified_watchlists. 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 unified_watchlists? +

unified_watchlists is provided by the Open Stocks MCP server (open-agent-tools/open-stocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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