homelab-pihole-dns

homelab-pihole-dns is a skill for Claude Code, Codex from JunMystery/Agent-Guidance-Python. It costs 40 tokens per session (2,395 once invoked), scanned B, a copy of homelab-pihole-dns, MIT.

A guide to Pi-hole, a network-wide DNS blocker that can stop advertising and tracking domains for every device on a home network. DNS is the service that turns website names into network addresses.

In plain words
What is it for?
Use it to install Pi-hole, manage blocklists, configure secure upstream DNS, add local records, and fix broken name resolution.
Why use it?
It removes the need to configure a separate browser blocker on each device and can also provide local names for home devices.

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 secure upstream DNS, add local records, and fix broken name resolution.

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Install with agentmods
npx agentmods add skills/junmystery/agent-guidance-python/homelab-pihole-dns
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 JunMystery/Agent-Guidance-Python --skill homelab-pihole-dns
Clone the repo
git clone --depth 1 https://github.com/JunMystery/Agent-Guidance-Python

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/junmystery/agent-guidance-python/homelab-pihole-dns/github.svg)](https://agentmods.dev/skills/junmystery/agent-guidance-python/homelab-pihole-dns)
Your own site
<a href="https://agentmods.dev/skills/junmystery/agent-guidance-python/homelab-pihole-dns"><img src="https://agentmods.dev/badge/skills/junmystery/agent-guidance-python/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/junmystery/agent-guidance-python/homelab-pihole-dns"><img src="https://agentmods.dev/badge/skills/junmystery/agent-guidance-python/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 2,395 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.
Origin 95% copy Near-identical to another mod 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 $0.02395
Opus 5 $0.00020 $0.01197
Sonnet 5 $0.00008 $0.00479
Haiku 4.5 $0.00004 $0.00239

Measured 6d ago against content hash c53d50a4406d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 6d 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
Origin

This is a copy

95% identical to homelab-pihole-dns — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/homelab-pihole-dns/SKILL.md · 275 lines

How it starts

The opening of the file, as written. The whole thing — 275 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 · 275 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. 6d ago First seen · 275 lines · 40 tokens per session scan B c53d50a4406d

Subscribe to this mod's changes

homelab-pihole-dns is a skill published in the GitHub repository JunMystery/Agent-Guidance-Python (2 stars, last pushed 1mo ago), licensed MIT. It adds 40 tokens to every session and 2,395 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). It is 95% identical to homelab-pihole-dns, differing in 3 lines, and is treated as a copy.

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