AI agents call get_etf_daily_price to retrieve information from Smart Financial without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves ETF pricing information without modifying any data or triggering transactions. It is a read-only query function analogous to other data-retrieval tools on the server. Even in a financial context, querying historical prices poses minimal risk—an AI agent cannot cause financial harm by fetching market data alone.
From the tool's definition Tool name 'get_etf_daily_price' indicates retrieval of historical daily price data for ETFs. Description is empty but the sibling tools on this server (get_daily_stock_price, get_index_daily_price, get_futures_daily_price, get_realtime_stock_price) are all…
Documented attack patterns abuse exactly the kind of access get_etf_daily_price gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Smart Financial, and nothing reaches the server without passing your rules. This is the rule we recommend for get_etf_daily_price:
{
"version": "1",
"default": "deny",
"tools": {
"get_etf_daily_price": {}
}
}get_etf_daily_price is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_etf_daily_price. It is categorised as a Read tool in the Smart Financial MCP Server, which means it retrieves data without modifying state.
Register the Smart Financial MCP server in PolicyLayer and add a rule for get_etf_daily_price: 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 Smart Financial. Nothing to install.
get_etf_daily_price 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_etf_daily_price 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_etf_daily_price. 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_etf_daily_price is provided by the Smart Financial MCP server (yuhai0/smart-financial-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Smart Financial, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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12 Smart Financial tools catalogued and risk-classified — across an index of 43,000+ MCP servers.