สแกนหุ้นทุกตัวใน SET/mai หา Top Gainers และ Top Losers รายสัปดาห์\n
AI agents call scan_weekly_movers 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 retrieves financial market data (weekly price movers) without modifying, executing external operations, deleting, or moving money. It is purely informational/analytical, consistent with other read-only scanning tools on the server. No side effects or irreversible actions are possible.
From the tool's definition Tool name 'scan_weekly_movers' and description indicate scanning/finding top gainers and losers weekly. The verb 'scan' and 'หา' (find/search) describe data retrieval operations.
Attacks that exploit this kind of access
สแกนหุ้นทุกตัวใน SET/mai หา Top Gainers และ Top Losers รายสัปดาห์\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_weekly_movers: 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_weekly_movers 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_weekly_movers 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_weekly_movers. 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_weekly_movers 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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