dns-zonefile-config

dns-zonefile-config is a skill for Claude Code, Codex from guia-matthieu/clawfu-skills. It costs 143 tokens per session (5,647 once invoked), scanned A, original, MIT.

A guide for configuring DNS, the system that connects domain names to online services, including email authentication, domain security, and provider APIs.

In plain words
What is it for?
Use it to configure SPF, DKIM, DMARC, DNSSEC, and CAA records, troubleshoot DNS, and automate changes with Cloudflare, OVH, or Terraform.
Why use it?
It helps prevent email spoofing and delivery problems while making complex DNS changes easier to organise and automate.

Skill for Claude CodeCodex

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

Good fit Use it to configure SPF, DKIM, DMARC, DNSSEC, and CAA records, troubleshoot DNS, and automate changes with Cloudflare, OVH, or Terraform.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/guia-matthieu/clawfu-skills/dns-zonefile-config
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 guia-matthieu/clawfu-skills --skill dns-zonefile-config
Clone the repo
git clone --depth 1 https://github.com/guia-matthieu/clawfu-skills

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 dns-zonefile-config

README.md
[![agentmods](https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/dns-zonefile-config/github.svg)](https://agentmods.dev/skills/guia-matthieu/clawfu-skills/dns-zonefile-config)
Your own site
<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/dns-zonefile-config"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/dns-zonefile-config/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 dns-zonefile-config

Your own site · 80×15
<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/dns-zonefile-config"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/dns-zonefile-config.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 143 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,647 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00143 $0.05647
Opus 5 $0.00072 $0.02823
Sonnet 5 $0.00029 $0.01129
Haiku 4.5 $0.00014 $0.00565

Measured 9d ago against content hash 0b4c11acb547, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

dns-zonefile-config scanned grade A with 0 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/devops/dns-zonefile-config/SKILL.md · 676 lines

How it starts

The opening of the file, as written. The whole thing — 676 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DNS Zonefile Configuration

Configurez correctement vos zones DNS pour l'email deliverability (SPF, DKIM, DMARC), la sécurité (DNSSEC, CAA), et l'automatisation (OVH API, Cloudflare, Terraform), basé sur les best practices 2024-2025.

When to Use This Skill

  • Configurer l'authentification email - SPF, DKIM, DMARC pour éviter le spam folder
  • Sécuriser un domaine - DNSSEC, CAA records, protection contre le spoofing
  • Automatiser la gestion DNS - OVH API, Cloudflare API, Terraform
  • Débugger des problèmes DNS - dig, nslookup, MXToolbox
  • Migrer ou configurer un nouveau domaine - Setup complet from scratch

Methodology Foundation

Sources:

Why This Matters: Depuis février 2024, Google et Yahoo exigent SPF, DKIM et DMARC pour les envois bulk. Sans configuration correcte, vos emails finissent en spam. Les expéditeurs authentifiés ont 2.7x plus de chances d'atteindre l'inbox.

What Claude Does vs What You Decide

Claude Does You Decide
Structures sales frameworks Deal strategy
Suggests discovery questions Relationship approach
Creates proposal templates Pricing decisions
Identifies objection patterns Negotiation tactics
Analyzes deal dynamics Final deal terms

What This Skill Does

  1. Configure l'authentification email - SPF, DKIM, DMARC avec les bonnes valeurs
  2. Sécurise le domaine - DNSSEC, CAA, protection certificats
  3. Optimise les TTL - Valeurs recommandées par type de record
  4. Automatise via API - OVH, Cloudflare, Terraform
  5. Diagnostique les problèmes - Outils et troubleshooting

Read the full file on GitHub · 676 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 · 676 lines · 143 tokens per session scan A 0b4c11acb547

Subscribe to this mod's changes

dns-zonefile-config is a skill published in the GitHub repository guia-matthieu/clawfu-skills (149 stars, last pushed 5mo ago), licensed MIT. It adds 143 tokens to every session and 5,647 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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