# scan_dns_builtin

Perform DNS enumeration (built-in).

Agent View of the PolicyLayer registry record for `scan_dns_builtin`. HTML page: https://policylayer.com/tools/0xsteph-pentest-ai/scan-dns-builtin

## Facts

- Tool: `scan_dns_builtin`
- Server: Pentest Ai (`0xsteph/pentest-ai`) — https://policylayer.com/tools/0xsteph-pentest-ai.md
- Homepage: https://github.com/0xSteph/pentest-ai
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "scan_dns_builtin",
    "arguments": {}
  }
}
```

## Why scan_dns_builtin is rated High

DNS enumeration actively queries external DNS infrastructure to discover hostnames, subdomains, and network topology. This is an active reconnaissance operation with external side effects (sending DNS queries to target systems), placing it in the Execute category. While read-like in intent, it triggers external network operations against target systems, which is characteristic of Execute.

From the tool's own definition: "Perform DNS enumeration (built-in)"

## Use case

AI agents invoke scan_dns_builtin to trigger actions in Pentest Ai. 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Pentest Ai:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "scan_dns_builtin": {
      "limits": [
        {
          "counter": "scan_dns_builtin_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Pentest Ai (50)

- `kill_process` — Destructive — https://policylayer.com/tools/0xsteph-pentest-ai/kill-process.md
- `authenticated_scan` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/authenticated-scan.md
- `builtin_scan` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/builtin-scan.md
- `ensure_tools_installed` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/ensure-tools-installed.md
- `http_request` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/http-request.md
- `plan_tools` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/plan-tools.md
- `resume_engagement` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/resume-engagement.md
- `run_probe` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/run-probe.md
- `run_recon` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/run-recon.md
- `run_tool` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/run-tool.md
- `scan_ports_builtin` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/scan-ports-builtin.md
- `select_agent` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/select-agent.md
- `start_campaign` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/start-campaign.md
- `start_engagement` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/start-engagement.md
- `test_active_directory` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-active-directory.md
- `test_api_security` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-api-security.md
- `test_cloud` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-cloud.md
- `test_credentials` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-credentials.md
- `test_mobile` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-mobile.md
- `test_privesc` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-privesc.md
- `test_social_engineering` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-social-engineering.md
- `test_vulnerabilities` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-vulnerabilities.md
- `test_web_app` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-web-app.md
- `test_wireless` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/test-wireless.md
- `validate_finding` — Execute — https://policylayer.com/tools/0xsteph-pentest-ai/validate-finding.md
- `browser_inspect` — Read — https://policylayer.com/tools/0xsteph-pentest-ai/browser-inspect.md
- `discover_attack_chains` — Read — https://policylayer.com/tools/0xsteph-pentest-ai/discover-attack-chains.md
- `get_attack_chains` — Read — https://policylayer.com/tools/0xsteph-pentest-ai/get-attack-chains.md
- `get_campaign_summary` — Read — https://policylayer.com/tools/0xsteph-pentest-ai/get-campaign-summary.md
- `get_config` — Read — https://policylayer.com/tools/0xsteph-pentest-ai/get-config.md
- …and 20 more: https://policylayer.com/tools/0xsteph-pentest-ai.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xsteph-pentest-ai · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xsteph-pentest-ai