สแกนหุ้นไทย SET/MAI ทั้งตลาด หาหุ้นขาขึ้น ผันผวนแรง พักตัว Volume แห้ง\n
AI agents call scan_volatile_pullback_dry_volume 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 is a stock screening/scanning tool that filters and returns data based on technical criteria (uptrend, volatility, pullback patterns, volume). It performs no write, destructive, execute, or financial operations — it only retrieves and analyzes existing market data. The blast radius of misuse is minimal since it cannot alter market data, execute arbitrary code, or trigger financial transactions.
From the tool's definition Tool name contains 'scan' and description translates to 'scan Thai stocks SET/MAI across the market, find uptrend stocks, high volatility, pullback, dry volume' — it queries/retrieves stock data matching criteria without modifying, deleting, executing code,…
Attacks that exploit this kind of access
สแกนหุ้นไทย SET/MAI ทั้งตลาด หาหุ้นขาขึ้น ผันผวนแรง พักตัว Volume แห้ง\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 scan_volatile_pullback_dry_volume: 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.
scan_volatile_pullback_dry_volume 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 scan_volatile_pullback_dry_volume 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 scan_volatile_pullback_dry_volume. 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.
scan_volatile_pullback_dry_volume 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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