homelab-pihole-dns

homelab-pihole-dns is a skill for Claude Code, Codex from ufy2024/AuC. It costs 40 tokens per session (2,510 once invoked), scanned B, original, MIT.

A guide to running Pi-hole, a network-wide DNS ad blocker, on a Raspberry Pi or Linux computer. DNS is the service that turns website names into internet addresses.

In plain words
What is it for?
Use it to install Pi-hole, manage blocklists, configure encrypted upstream DNS, add local names such as nas.home.lan, and connect it with DHCP.
Why use it?
It blocks advertising and malware domains for devices across the home network without installing a browser extension on each device. It also helps diagnose internet access problems caused by DNS settings.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to install Pi-hole, manage blocklists, configure encrypted upstream DNS, add local names such as nas.home.lan, and connect it with DHCP.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ufy2024/auc/homelab-pihole-dns
View source ↗ ufy2024/AuC
About the project

AuC is a Python framework for running a single AI agent with an asynchronous, pluggable reasoning loop, language-model adapters, permission levels, and observable events. It is used to build coding and conversational agents with tools, security checks, web interfaces, background jobs, evaluations, and isolated execution. The catalogue entries are skills for extending its agent workflow.

ufy2024/AuC · 1,090 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ufy2024/AuC --skill homelab-pihole-dns
Clone the repo
git clone --depth 1 https://github.com/ufy2024/AuC

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for homelab-pihole-dns

README.md
[![agentmods](https://agentmods.dev/badge/skills/ufy2024/auc/homelab-pihole-dns/github.svg)](https://agentmods.dev/skills/ufy2024/auc/homelab-pihole-dns)
Your own site
<a href="https://agentmods.dev/skills/ufy2024/auc/homelab-pihole-dns"><img src="https://agentmods.dev/badge/skills/ufy2024/auc/homelab-pihole-dns/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for homelab-pihole-dns

Your own site · 80×15
<a href="https://agentmods.dev/skills/ufy2024/auc/homelab-pihole-dns"><img src="https://agentmods.dev/badge/skills/ufy2024/auc/homelab-pihole-dns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,510 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 13 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 78
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Tool Misuse · line 138
    Tool calls are chained to bypass individual safety checks or escalate capabilities beyond what any single tool call would allow.
    Fix: Limit tool chaining depth and validate the output of each tool before passing it to the next. Require explicit user approval for multi-step chains.
  • medium Agent Snooping · line 21
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Privilege Escalation · line 104
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 138
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 188
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 189
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 192
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 193
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 202
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 203
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 204
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Rogue Agent · line 204
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.02510
Opus 5 $0.00020 $0.01255
Sonnet 5 $0.00008 $0.00502
Haiku 4.5 $0.00004 $0.00251

Measured 9d ago against content hash 85ee0ae02070, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

homelab-pihole-dns scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo nano /etc/dhcpcd.conf

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sSL https://install.pi-hole.net -o pi-hole-install.sh
auc/skill_library/bundled/homelab-pihole-dns/SKILL.md · 296 lines

How it starts

The opening of the file, as written. The whole thing — 296 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Homelab Pi-hole DNS

Pi-hole is a network-wide DNS ad blocker that runs on a Raspberry Pi or any Linux host. Every device on your network gets ad and malware domain blocking automatically — no browser extension needed.

When to Use

  • Installing Pi-hole on a Raspberry Pi or Linux host
  • Configuring Pi-hole as the DNS server for a home network
  • Adding or managing blocklists
  • Setting up DNS-over-HTTPS (DoH) upstream resolvers
  • Creating local DNS records (e.g. nas.home.lan, pi.home.lan)
  • Troubleshooting devices that lose internet access after Pi-hole is installed
  • Running Pi-hole alongside or instead of DHCP

How Pi-hole Works

Normal flow (without Pi-hole):
  Device → requests ads.tracker.com → ISP DNS → real IP → ads load

With Pi-hole:
  Device → requests ads.tracker.com → Pi-hole DNS → blocked (returns 0.0.0.0) → no ad

All DNS queries go through Pi-hole first.
Pi-hole checks against blocklists.
Blocked domains return a null response — the ad/tracker never loads.
Allowed domains get forwarded to your upstream resolver (Cloudflare, Google, etc.).

Installation

Docker (Recommended)

Docker is the easiest way to install Pi-hole and makes updates and backups straightforward.

# docker-compose.yml
services:
  pihole:
    image: pihole/pihole:<pinned-release-tag>
    container_name: pihole
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "80:80/tcp"          # Web admin
    environment:
      TZ: "America/New_York"
      WEBPASSWORD: "${PIHOLE_WEBPASSWORD}"   # set via .env file or secret
      PIHOLE_DNS_: "1.1.1.1;1.0.0.1"
      DNSMASQ_LISTENING: "all"
    volumes:
      - "./etc-pihole:/etc/pihole"
      - "./etc-dnsmasq.d:/etc/dnsmasq.d"
    restart: unless-stopped
    cap_add:
      - NET_ADMIN              # only needed if Pi-hole will serve DHCP

Replace <pinned-release-tag> with a current Pi-hole release tag before deploying. Avoid latest for long-lived DNS infrastructure so upgrades are deliberate and reviewable.

Read the full file on GitHub · 296 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 296 lines · 40 tokens per session scan B 85ee0ae02070

Subscribe to this mod's changes

homelab-pihole-dns is a skill published in the GitHub repository ufy2024/AuC (1,090 stars, last pushed 1mo ago), licensed MIT. It adds 40 tokens to every session and 2,510 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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