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netcheck

Triage a network outage from moria, offline-safe and read-only.

Skill by GregHilston

IndexedMIT★ 15
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/greghilston-netcheck

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Triage a network outage from moria, offline-safe and read-only. Use when the internet is down, a network outage, "can't reach" a host or service, DNS is broken, or wifi is down.

Reviews

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/netcheck

What's inside

Skill name
netcheck
Description
Triage a network outage from moria, offline-safe and read-only. Use when the internet is down, a network outage, "can't reach" a host or service, DNS is broken, or wifi is down.
License
MIT
Instructions
26 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Netcheck

One command, already on `PATH`. Run it in your shell (the `terminal` tool in
Hermes, Bash in Claude Code, `bash` in pi) exactly as shown: no `python3` in
front and no directory. It works with the internet down.

```bash
netcheck
netcheck --json
```

It walks the ladder (link, router, dungeon, internet, DNS, local DNS, Tailscale,
services), stops at the first failing layer, and prints `VERDICT:`, `next:` and a
`works:` line saying what you can still use, such as the local model.

Exit code 0 means `VERDICT: OK`; 1 means any other verdict.

1. Run `netcheck` first. Do not guess the cause before it answers.
2. Open the runbook section it names in `next:` and follow it step by step.
3. Run `netcheck` again after each step Greg approves.

Read-only: do not restart the router, a switch, dungeon, dnsmasq or Tailscale, and
do not change DNS or Omada settings, without Greg saying so. Do not use `nmap` or
web search to diagnose; with the internet down they tell you nothing.

From GregHilston/toolbox, MIT.

More from GregHilston/toolbox

Signals

Stars
15
Forks
5
Open issues
0
Last commit (this folder)
Oct 20, 2026 (7 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/GregHilston/toolbox
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from GregHilston

Cite this page

netcheck skill. Agent Mart. https://agentmart.dev/skills/greghilston-netcheck (last updated 2026-10-24)