vt_lookup
AI agents call vt_lookup to retrieve information from Malware Analysis MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
VirusTotal lookup is a read-only query operation that retrieves malware metadata and threat intelligence. It has no side effects—it does not modify, delete, or execute anything. The tool fits the 'Read' category as it retrieves or queries data for defensive security analysis. Severity is low because misuse would only expose threat data that is already public.
From the tool's definition Tool name 'vt_lookup' indicates querying VirusTotal for threat intelligence data. Server description states tools 'search for IOCs, analyze local file hashes, and access data transformation tools for defensive security research.' The sibling tools include…
Attacks that exploit this kind of access
vt_lookup. It is categorised as a Read tool in the Malware Analysis MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Malware Analysis MCP Server MCP server in PolicyLayer and add a rule for vt_lookup: 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 Malware Analysis MCP Server. Nothing to install.
vt_lookup 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 vt_lookup 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 vt_lookup. 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.
vt_lookup is provided by the Malware Analysis MCP Server MCP server (securitytalent/malware-analysis-mcp-server). 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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