Get option expiration dates for a symbol.
AI agents call etrade_get_option_expire_dates 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 queries and retrieves option expiration date information for a given symbol. It is a data retrieval operation with no capability to modify, execute, or delete data. While it is part of a financial service, it does not involve moving money, executing trades, or creating financial obligations—it merely provides lookup information to support financial decision-making.
From the tool's definition Tool description states 'Get option expiration dates' which retrieves data without modification. Server description confirms the MCP server provides 'retrieving real-time stock quotes, looking up securities, and analyzing option chains' as read-only…
Attacks that exploit this kind of access
Get option expiration dates for a symbol. 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 etrade_get_option_expire_dates: 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.
etrade_get_option_expire_dates 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 etrade_get_option_expire_dates 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 etrade_get_option_expire_dates. 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.
etrade_get_option_expire_dates is provided by the E*TRADE MCP Server MCP server (jjmerri/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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