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.
npx skills add ripmilla/netwalk --skill netwalk-scangit clone --depth 1 https://github.com/ripmilla/netwalkWrote 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.
[](https://agentmods.dev/skills/ripmilla/netwalk/netwalk-scan)<a href="https://agentmods.dev/skills/ripmilla/netwalk/netwalk-scan"><img src="https://agentmods.dev/badge/skills/ripmilla/netwalk/netwalk-scan/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.
<a href="https://agentmods.dev/skills/ripmilla/netwalk/netwalk-scan"><img src="https://agentmods.dev/badge/skills/ripmilla/netwalk/netwalk-scan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00111 | $0.04061 |
| Opus 5.5 | $0.00044 | $0.01624 |
| Sonnet 5.5 | $0.00022 | $0.00812 |
| Haiku 4.5 | $0.00011 | $0.00406 |
Grade A, and why
netwalk-scan 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 268 lines — stays where its author put it; the contents beside it link to each section on GitHub.
netwalk-scan
Part of the netwalk read-only network survey toolkit. Toolkit lives at {{TOOLKIT}}.
The goal is a complete, honest picture of the target network — and honesty includes writing down what you could not reach. A survey that quietly stops at the first ring of neighbours and presents itself as complete is worse than one that says "6 of 9 devices reached, here is why".
Read-only, and it is enforced
Every command goes through netwalk_exec.py, which checks it against a per-vendor read-only
allowlist before it leaves the machine. Config writes, counter clears, service restarts, reboots
and shell metacharacters are refused by the tool. You never SSH to a surveyed device directly —
always go through the wrapper, so the guarantee holds and every command lands in the evidence log.
If the gate blocks something you believe is genuinely read-only, do not work around it. Either pick
a different command, or add it to the allowlist in scripts/netwalk_policy.py, run
python3 {{TOOLKIT}}/tests/test_policy.py, and note the change. Never bypass the wrapper.
Before you touch anything
Ask, and do not guess:
- What is the target? An entry device (IP), a subnet, a site name, "my whole office"? You need at least one device you can log into — netwalk crawls from a device. It can also sweep an address range, but only one the owner has explicitly authorised; see Sweeping a range below.
- Whose network is it? If it is a customer's, confirm the user is authorised to log into this
equipment today. Record what they say in
site.scope_note— it goes in the report. - Anything off limits? Production boxes that must not even be logged into, a maintenance
window, a device that falls over when you open a session. Respect it and record it under
coverage.not_covered. - How far? Default is exhaustive: keep hopping until every reachable neighbour has been visited. On a big site, say up front roughly how many hops that might be and check in.
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.
- 2mo ago First seen · 268 lines · 111 tokens per session scan A 64a28fd4bdce
netwalk-scan is a skill published in the GitHub repository ripmilla/netwalk (86 stars, last pushed 2mo ago), licensed MIT. It adds 111 tokens to every session and 4,061 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-30.
netwalk-scan compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| netwalk-scanripmilla/netwalk | Skill | 86 | 2mo ago | MIT | A | 111 | Claude Code, Codex |
| gke-compute-classesgoogle/skills | Skill | 22k | yesterday | Apache-2.0 | A | 83 | Claude Code, Codex |
| jetson-diagnosticNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 30 | Claude Code, Codex |
| holoscan-install-wheelNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 34 | Claude Code, Codex |
| offensive-z-waveSnailSploit/Claude-Red | Skill | 10k | 25d ago | MIT | A | 113 | Claude Code, Codex |
| doca-socket-relayNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 236 | Claude Code, Codex |
| hsb-flashNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | B | 94 | Claude Code |