Get options chain data with advanced greeks and analysis
AI agents call get_options_chain_v2 to retrieve information from StockFlow 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 financial market data (options chain information and analytical greeks) without modifying data, executing code, deleting records, or moving money. It is a pure read operation analogous to searching or fetching market information. The low severity reflects that misuse would only expose existing market data without enabling harmful actions.
From the tool's definition Tool retrieves 'options chain data with advanced greeks and analysis' from market data sources. The verb 'get' and description use only retrieval language with no modification, deletion, or execution capabilities mentioned.
Documented attack patterns abuse exactly the kind of access get_options_chain_v2 gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and StockFlow MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_options_chain_v2:
{
"version": "1",
"default": "deny",
"tools": {
"get_options_chain_v2": {}
}
}get_options_chain_v2 is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get options chain data with advanced greeks and analysis. It is categorised as a Read tool in the StockFlow MCP Server MCP Server, which means it retrieves data without modifying state.
Register the StockFlow MCP Server MCP server in PolicyLayer and add a rule for get_options_chain_v2: 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 StockFlow MCP Server. Nothing to install.
get_options_chain_v2 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_options_chain_v2 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_options_chain_v2. 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_options_chain_v2 is provided by the StockFlow MCP Server MCP server (twolven/mcp-stockflow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from StockFlow MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
3 StockFlow MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.