AI agents call get_insider_transactions to retrieve information from YFinance Trader MCP Tool without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries publicly available insider transaction information without modifying data, executing code, or committing financial resources. Despite the empty description reducing confidence slightly, the method prefix 'get_' and context of a financial data library (yfinance) strongly suggest a read-only data retrieval operation.
From the tool's definition Tool name 'get_insider_transactions' indicates retrieval of historical insider trading data. The empty description provides no details, but the naming convention matches other read-only tools on this server (get_company_overview, get_stock_quote,…
Documented attack patterns abuse exactly the kind of access get_insider_transactions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and YFinance Trader MCP Tool, and nothing reaches the server without passing your rules. This is the rule we recommend for get_insider_transactions:
{
"version": "1",
"default": "deny",
"tools": {
"get_insider_transactions": {}
}
}get_insider_transactions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_insider_transactions. It is categorised as a Read tool in the YFinance Trader MCP Tool MCP Server, which means it retrieves data without modifying state.
Register the YFinance Trader MCP Tool MCP server in PolicyLayer and add a rule for get_insider_transactions: 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 YFinance Trader MCP Tool. Nothing to install.
get_insider_transactions 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_insider_transactions 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_insider_transactions. 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_insider_transactions is provided by the YFinance Trader MCP Tool MCP server (saintdoresh/yfinance-trader-mcp-claudedesktop). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 YFinance Trader MCP Tool tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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6 YFinance Trader MCP Tool tools catalogued and risk-classified — across an index of 42,500+ MCP servers.