stock_quote_by_id

Gets stock quote using Robinhood's internal instrument ID.

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-quote-by-id.md

WHAT IT DOES

What stock_quote_by_id does on Open Stocks MCP

AI agents call stock_quote_by_id 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_quote_by_id is rated Low

This tool retrieves publicly available or account-specific stock pricing data without side effects. It does not create, modify, delete, or execute trades. Even in the context of a trading-capable server, this specific tool is limited to querying stock quotes, making it a Read operation with minimal risk.

From the tool's definition Tool name 'stock_quote_by_id' and description 'Gets stock quote' indicate a retrieval operation. No language suggesting modification, deletion, or execution of trades (e.g., no 'buy', 'sell', 'execute', 'delete', 'update').

Attacks that exploit this kind of access

RECOMMENDED RULE

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

stock_quote_by_id Allowed

stock_quote_by_id 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_quote_by_id": {}
  }
}

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_quote_by_id call is checked against it from then on.

FAQ

Questions about stock_quote_by_id

What does the stock_quote_by_id tool do? +

Gets stock quote using Robinhood's internal instrument ID. 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_quote_by_id? +

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

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

Can I rate-limit stock_quote_by_id? +

Yes. Add a rate_limit block to the stock_quote_by_id 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_quote_by_id completely? +

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

stock_quote_by_id 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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