AI agents call clamav_scan to retrieve information from SAST MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
ClamAV scans files for malware signatures and returns results without creating, modifying, deleting, or executing anything. It retrieves data about potential threats. The blast radius is minimal—misuse would only produce false-positive or excessive scan results.
From the tool's definition Tool name 'clamav_scan' combined with server purpose (SAST/security testing) indicates antivirus scanning. ClamAV is a read-only malware detection tool that analyzes files without modification.
Documented attack patterns abuse exactly the kind of access clamav_scan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SAST MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for clamav_scan:
{
"version": "1",
"default": "deny",
"tools": {
"clamav_scan": {}
}
}clamav_scan is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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clamav_scan. It is categorised as a Read tool in the SAST MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SAST MCP Server MCP server in PolicyLayer and add a rule for clamav_scan: 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 SAST MCP Server. Nothing to install.
clamav_scan 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 clamav_scan 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 clamav_scan. 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.
clamav_scan is provided by the SAST MCP Server MCP server (sengtocxoen/sast-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SAST MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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39 SAST MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.