stock_price

Gets current stock price and basic metrics.

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/stock-price.md

WHAT IT DOES

What stock_price does on Open Stocks MCP

AI agents call stock_price 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 stock_price is rated Low

This tool retrieves publicly available stock market data without side effects. It performs a query operation typical of Read category tools. Despite being on a server with trading capabilities, this specific tool only fetches information and cannot execute trades, modify accounts, or delete data.

From the tool's definition Tool name 'stock_price' and description 'Gets current stock price and basic metrics' indicate data retrieval with no modification, deletion, or execution of commands.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

stock_price Allowed

stock_price 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": {
    "stock_price": {}
  }
}

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 stock_price call is checked against it from then on.

FAQ

Questions about stock_price

What does the stock_price tool do? +

Gets current stock price and basic metrics. 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 stock_price? +

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

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

Can I rate-limit stock_price? +

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

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

stock_price 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

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