scan_target · Security Scanner MCP Server MCP: Risk & Policy

WHAT IT DOES

What scan_target does on Security Scanner MCP Server

AI agents invoke scan_target to trigger actions in Security Scanner MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why scan_target needs a policy

The tool almost certainly initiates an active vulnerability scan against a target system using the Nuclei scanner, which constitutes executing an external operation (network scanning). Misuse could result in scanning unauthorized targets, triggering alerts, or causing disruption.

From the tool's definition Tool name 'scan_target' on a server described as enabling 'comprehensive vulnerability scanning using Nuclei scanner' against 'single targets, network ranges, and cluster-wide security assessments'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

scan_target Rate-limited

scan_target stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "scan_target": {
      "limits": [
        {
          "counter": "scan_target_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Security Scanner MCP Server, so you can run agents against it safely.

FAQ

Questions about scan_target

What does the scan_target tool do? +

scan_target. It is categorised as a Execute tool in the Security Scanner MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on scan_target? +

Register the Security Scanner MCP Server MCP server in PolicyLayer and add a rule for scan_target: 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 Security Scanner MCP Server. Nothing to install.

What risk level is scan_target? +

scan_target is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit scan_target? +

Yes. Add a rate_limit block to the scan_target 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.

How do I block scan_target completely? +

Set action: deny in the PolicyLayer policy for scan_target. 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.

What MCP server provides scan_target? +

scan_target is provided by the Security Scanner MCP Server MCP server (marc-shade/security-scanner-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.