stock_info

Gets detailed company information and fundamentals.

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-info.md

WHAT IT DOES

What stock_info does on Open Stocks MCP

AI agents call stock_info 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_info is rated Low

This tool queries and returns publicly available stock and company data. It performs a GET-like operation that does not modify, execute, delete, or commit any financial transactions. The retrieval of market data and company fundamentals has no blast radius if misused by an agent—it is purely informational read access.

From the tool's definition Tool name 'stock_info' and description 'Gets detailed company information and fundamentals' indicate a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

stock_info Allowed

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": {
    "stock_info": {}
  }
}

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_info call is checked against it from then on.

FAQ

Questions about stock_info

What does the stock_info tool do? +

Gets detailed company information and fundamentals. 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_info? +

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

What risk level is stock_info? +

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

Can I rate-limit stock_info? +

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

Set action: deny in the PolicyLayer policy for 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 stock_info? +

stock_info 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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