ดึงข้อมูลราคาย้อนหลังของหุ้นไทยรายตัว\n
AI agents call get_stock_history to retrieve information from Yahoo Finance without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns historical stock price information. It performs a read-only operation that retrieves data from Yahoo Finance API without creating, modifying, deleting, or executing any actions. The tool merely fetches historical data for analysis purposes.
From the tool's definition Tool name 'get_stock_history' and description 'ดึงข้อมูลราคาย้อนหลังของหุ้นไทยรายตัว' (retrieves historical price data of individual Thai stocks) indicate a data retrieval operation with no side effects.
Attacks that exploit this kind of access
ดึงข้อมูลราคาย้อนหลังของหุ้นไทยรายตัว\n. It is categorised as a Read tool in the Yahoo Finance MCP Server, which means it retrieves data without modifying state.
Register the Yahoo Finance MCP server in PolicyLayer and add a rule for get_stock_history: 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 Yahoo Finance. Nothing to install.
get_stock_history 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_stock_history 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_stock_history. 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_stock_history is provided by the Yahoo Finance MCP server (itjung-source/yahoo-finance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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