watchlist_performance

Gets performance metrics for a watchlist.

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/watchlist-performance.md

WHAT IT DOES

What watchlist_performance does on Open Stocks MCP

AI agents call watchlist_performance 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 watchlist_performance is rated Low

This tool only reads and returns performance metrics associated with a watchlist. It does not modify, execute, delete, or involve financial transactions. Low severity as it only exposes potentially sensitive financial data but cannot cause harm through misuse beyond information disclosure.

From the tool's definition 'Gets performance metrics for a watchlist' — purely retrieves/queries data with no side effects

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs watchlist_performance 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 watchlist_performance, this is the rule to start with:

watchlist_performance Allowed

watchlist_performance 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": {
    "watchlist_performance": {}
  }
}

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 watchlist_performance call is checked against it from then on.

FAQ

Questions about watchlist_performance

What does the watchlist_performance tool do? +

Gets performance metrics for a watchlist. 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 watchlist_performance? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for watchlist_performance: 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 watchlist_performance? +

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

Can I rate-limit watchlist_performance? +

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

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

watchlist_performance 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.

KEEP EXPLORING

More on Open Stocks, and thousands of servers like it.

This server

All 152 Open Stocks tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →