dns

dns is a skill for Claude Code from ai-ecoverse/slicc. It costs 54 tokens per session (502 once invoked), scanned A, original, Apache-2.0.

A DNS lookup skill for finding the records that map domain names to addresses and other services, using the built-in dig command over DNS-over-HTTPS. It supports common records such as A, AAAA, MX, TXT, and reverse PTR lookups.

In plain words
What is it for?
Use it to query domain records, perform reverse lookups for IP addresses, choose supported resolvers, or obtain short or JSON output.
Why use it?
It gives a defined way to inspect name resolution and troubleshoot whether domains and addresses point where expected.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to query domain records, perform reverse lookups for IP addresses…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-ecoverse/slicc/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 ai-ecoverse/slicc --skill dns
Clone the repo
git clone --depth 1 https://github.com/ai-ecoverse/slicc

Made for: Claude Code.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-ecoverse/slicc/dns.svg)](https://agentmods.dev/skills/ai-ecoverse/slicc/dns)
Your own site
<a href="https://agentmods.dev/skills/ai-ecoverse/slicc/dns"><img src="https://agentmods.dev/badge/skills/ai-ecoverse/slicc/dns.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 502 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 $0.00054 $0.00502
Opus 5 $0.00027 $0.00251
Sonnet 5 $0.00011 $0.00100
Haiku 4.5 $0.00005 $0.00050

Measured yesterday against content hash f7dd5018ca63, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

dns 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 yesterday.

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.

packages/vfs-root/workspace/skills/dns/SKILL.md · 45 lines

What it actually says

DNS lookups with dig

SLICC's built-in dig resolves DNS records over DNS-over-HTTPS (DoH):

dig <name> [type] [@server] [+opts] [--json]
dig <type> <name> [@server] [+opts] [--json]
dig -x <address> [@server] [+opts] [--json]
dig -v | dig --version

The name and supported record type may appear in either order. A lone positional is always the name and defaults to type A. Supported types are A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, PTR, and CAA.

Resolver selection

Resolver Supported @server values
Cloudflare @1.1.1.1, @1.0.0.1, @cloudflare-dns.com
Google @8.8.8.8, @8.8.4.4, @dns.google
Quad9 @9.9.9.9, @149.112.112.112, @dns.quad9.net

Cloudflare is the default. Any other @server falls back to Cloudflare and prints a note on stderr because arbitrary DNS servers cannot be queried over the built-in DoH transport.

Flags and output

  • -x <address> performs an IPv4 or IPv6 reverse lookup as a PTR query.
  • -v and --version print DiG 9.20.0-slicc (DNS-over-HTTPS) and exit.
  • +short prints one answer value per line; --json prints the resolver response as JSON. They are mutually exclusive.
  • Other +opts, such as +noall and +answer, are accepted as no-ops.
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. yesterday First seen · 45 lines · 54 tokens per session scan A f7dd5018ca63

Subscribe to this mod's changes

dns is a skill published in the GitHub repository ai-ecoverse/slicc (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 54 tokens to every session and 502 once invoked, about $0.0003 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 2026-09-05.

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