# ctf_download_file

A read tool on the Zebbern Kali MCP MCP server.

Agent View of the PolicyLayer registry record for `ctf_download_file`. HTML page: https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ctf-download-file

## Facts

- Tool: `ctf_download_file`
- Server: Zebbern Kali MCP (`zebbern/zebbern-kali-mcp`) — https://policylayer.com/tools/zebbern-zebbern-kali-mcp.md
- Homepage: https://github.com/zebbern/zebbern-kali-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why ctf_download_file is rated Low

The name suggests downloading a file, which is fundamentally a read/retrieval operation with no inherent side effects on the source system. However, confidence is moderate because (1) the description is empty, leaving actual behavior unclear, and (2) the server context is Kali Linux penetration testing, where 'download' could potentially involve extracting sensitive data discovered during reconnaissance.

From the tool's own definition: "Tool name 'ctf_download_file' indicates file retrieval operation. No description provided to clarify intended scope or constraints."

## Use case

AI agents call ctf_download_file to retrieve information from Zebbern Kali MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Zebbern Kali MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "ctf_download_file": {}
  }
}
```

## Other tools on Zebbern Kali MCP (132)

- `callback_clear` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-clear.md
- `hosts_clear` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/hosts-clear.md
- `hosts_remove` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/hosts-remove.md
- `msf_session_destroy` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/msf-session-destroy.md
- `msf_session_destroy_all` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/msf-session-destroy-all.md
- `pivot_remove` — Destructive — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/pivot-remove.md
- `ad_asreproast` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-asreproast.md
- `ad_bloodhound_collect` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-bloodhound-collect.md
- `ad_kerberoast` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-kerberoast.md
- `ad_ldap_enum` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-ldap-enum.md
- `ad_password_spray` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-password-spray.md
- `ad_psexec` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-psexec.md
- `ad_secretsdump` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-secretsdump.md
- `ad_wmiexec` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ad-wmiexec.md
- `api_auth_bypass_test` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-auth-bypass-test.md
- `api_ffuf_fuzz` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-ffuf-fuzz.md
- `api_fuzz_endpoint` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-fuzz-endpoint.md
- `api_graphql_fuzz` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-graphql-fuzz.md
- `api_jwt_crack` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-jwt-crack.md
- `api_kiterunner_scan` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-kiterunner-scan.md
- `api_newman_run` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-newman-run.md
- `api_nuclei_scan` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-nuclei-scan.md
- `api_rate_limit_test` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/api-rate-limit-test.md
- `callback_check` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-check.md
- `callback_generate` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-generate.md
- `callback_latest` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-latest.md
- `callback_start` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-start.md
- `callback_stop` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-stop.md
- `callback_wait` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/callback-wait.md
- `ctf_connect` — Execute — https://policylayer.com/tools/zebbern-zebbern-kali-mcp/ctf-connect.md
- …and 102 more: https://policylayer.com/tools/zebbern-zebbern-kali-mcp.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`

---

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