get_stock_info

Get stock information for a given ticker symbol

SERVERYahoo Finance MCP Server SOURCE16coffee/finance-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade A, identity unverified Pull the record →

This record as markdown: /tools/16coffee-finance-mcp/get-stock-info.md

WHAT IT DOES

What get_stock_info does on Yahoo Finance MCP Server

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

RISK

Why get_stock_info is rated Low

This tool retrieves financial data about stocks without creating, modifying, deleting, or executing code. It is a simple data query operation analogous to a GET request in REST APIs. No irreversible changes, code execution, or financial transactions occur. The low blast radius reflects that misuse by an AI agent would only result in unauthorized data access, not system damage or financial harm.

From the tool's definition Tool name 'get_stock_info' and description 'Get stock information for a given ticker symbol' indicate a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_stock_info safely

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

get_stock_info Allowed

get_stock_info 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": {
    "get_stock_info": {}
  }
}

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

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

FAQ

Questions about get_stock_info

What does the get_stock_info tool do? +

Get stock information for a given ticker symbol. It is categorised as a Read tool in the Yahoo Finance MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_stock_info? +

Register the Yahoo Finance MCP Server MCP server in PolicyLayer and add a rule for get_stock_info: 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 Yahoo Finance MCP Server. Nothing to install.

What risk level is get_stock_info? +

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

Can I rate-limit get_stock_info? +

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

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

get_stock_info is provided by the Yahoo Finance MCP Server MCP server (16coffee/finance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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