anta-validation

anta-validation is a skill for Claude Code, Codex from automateyournetwork/netclaw. It costs 84 tokens per session (1,218 once invoked), scanned A, original, Apache-2.0.

A read-only health-check tool for Arista EOS network switches, returning pass, fail, or not-applicable results against stated expectations.

In plain words
What is it for?
Use it to verify BGP, interfaces, hardware, and other supported features, check whether a change caused problems, and confirm that a switch is healthy.
Why use it?
It answers whether the device is in the expected state instead of merely showing raw command output or what a management system reports.

Skill for Claude CodeCodex

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

Good fit Use it to verify BGP, interfaces, hardware, and other supported features, check whether a change caused problems, and confirm that a switch is healthy.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/automateyournetwork/netclaw/anta-validation
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 automateyournetwork/netclaw --skill anta-validation
Clone the repo
git clone --depth 1 https://github.com/automateyournetwork/netclaw

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 anta-validation

README.md
[![agentmods](https://agentmods.dev/badge/skills/automateyournetwork/netclaw/anta-validation.svg)](https://agentmods.dev/skills/automateyournetwork/netclaw/anta-validation)
Your own site
<a href="https://agentmods.dev/skills/automateyournetwork/netclaw/anta-validation"><img src="https://agentmods.dev/badge/skills/automateyournetwork/netclaw/anta-validation.svg" alt="Measured on agentmods" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,218 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00084 $0.01218
Opus 5 $0.00042 $0.00609
Sonnet 5 $0.00017 $0.00244
Haiku 4.5 $0.00008 $0.00122

Measured 8d ago against content hash b258257b6a80, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

anta-validation 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 8d 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.

workspace/skills/anta-validation/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ANTA validation — the assertion layer

Every other NetClaw source reads state. This one asserts on it and returns a verdict you can act on.

Server: anta-mcp (NetClaw-authored over ANTA 1.9.0, Apache-2.0, own virtualenv) · 4 tools · 1,272 tokens · 208 tests in the catalogue

Which plane answers — read this before reaching for another server

Three servers touch Arista. They answer different questions, and picking the wrong one gives a confidently wrong answer.

Plane Server Answers
Validation this skill does the state match what it should be — pass/fail
Management arista-cvp-mcp what does CloudVision say — inventory, tags, compliance as CVP sees it
Device CLI pyats-*, multivendor-cli what is the raw state — show-command output

Use this skill to assert, not to fetch. If the question is "what is the interface MTU", that is the CLI plane. If the question is "is the MTU what it should be", that is this one.

The verdicts — five, and they never merge

Verdict Means Never counts as
pass tested, expectation held
fail tested, expectation did not hold
not_applicable the feature is not configured — nothing was tested fail
skipped ANTA declined to run it pass
error device unreachable or the run broke fail

not_applicable is the one that matters

ANTA natively reports a test for an unconfigured feature as a failure. Measured on a lab switch:

VerifyBGPPeerCount → failure
  "'show bgp summary vrf all' failed on veos1: BGP inactive"

That device has no BGP at all. Reporting it as a failure claims a BGP fault where there is no BGP. The server reclassifies it to not_applicable and keeps the original message.

When you report results: say "BGP: not applicable — this device does not run BGP", never "BGP test failed".

There is no health percentage, and you should not compute one

Read the full file on GitHub · 110 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. 8d ago First seen · 110 lines · 84 tokens per session scan A b258257b6a80

Subscribe to this mod's changes

anta-validation is a skill published in the GitHub repository automateyournetwork/netclaw (650 stars, last pushed yesterday), licensed Apache-2.0. It adds 84 tokens to every session and 1,218 once invoked, about $0.0004 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 2026-08-30.

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