Get quotes for multiple stock symbols in a single request (up to 25 symbols).
AI agents call get_batch_quotes to retrieve information from E*TRADE MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial market data (stock quotes) through a query operation. While the data has financial relevance, the tool itself performs no financial transactions, account modifications, or state changes. It is a read-only operation that returns information to inform decisions but does not execute trades, move money, or modify any system state.
From the tool's definition Tool name 'get_batch_quotes' and description 'Get quotes for multiple stock symbols' indicate data retrieval with no side effects. The action is purely informational—fetching real-time market data without creating, modifying, or deleting anything.
Attacks that exploit this kind of access
Get quotes for multiple stock symbols in a single request (up to 25 symbols). It is categorised as a Read tool in the E*TRADE MCP Server MCP Server, which means it retrieves data without modifying state.
Register the E*TRADE MCP Server MCP server in PolicyLayer and add a rule for get_batch_quotes: 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 E*TRADE MCP Server. Nothing to install.
get_batch_quotes is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_batch_quotes 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.
Set action: deny in the PolicyLayer policy for get_batch_quotes. 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.
get_batch_quotes is provided by the E*TRADE MCP Server MCP server (ohenak/etrade-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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