Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add AppsVortex/arness/plugin install arn-infraWrote 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/appsvortex/arness/arn-infra-wizard)<a href="https://agentmods.dev/skills/appsvortex/arness/arn-infra-wizard"><img src="https://agentmods.dev/badge/skills/appsvortex/arness/arn-infra-wizard/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/appsvortex/arness/arn-infra-wizard"><img src="https://agentmods.dev/badge/skills/appsvortex/arness/arn-infra-wizard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00140 | $0.04547 |
| Opus 5.5 | $0.00056 | $0.01819 |
| Sonnet 5.5 | $0.00028 | $0.00909 |
| Haiku 4.5 | $0.00014 | $0.00455 |
Grade A, and why
arn-infra-wizard 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.
How it starts
The opening of the file, as written. The whole thing — 439 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Arness Infra Wizard
Walk the user through the entire Arness infrastructure pipeline in a single continuous session. The wizard invokes each pipeline skill in sequence using the Skill tool, only pausing at genuine decision gates where user input is needed.
This skill is a sequencer and decision-gate handler. It MUST NOT duplicate sub-skill logic. All pipeline work is done by the invoked skills. The wizard handles: entry mode detection, transitions between skills, progress display, expertise-adaptive step selection, and artifact-based resumability.
Step 0: Ensure Configuration
Read ${CLAUDE_PLUGIN_ROOT}/skills/arn-infra-ensure-config/references/step-0-fast-path.md and follow its instructions. This guarantees a user profile exists and ## Arness is configured with Arness Infra fields before proceeding.
After Step 0 completes, read ${CLAUDE_PLUGIN_ROOT}/skills/arn-infra-ensure-config/references/experience-derivation.md and derive the user's infrastructure experience level from their profile.
Arness Core is optional but enhances cross-plugin workflows when present. If a ## Arness section exists with Arness Core fields (plans directory, specs directory, etc.), note the configuration for cross-plugin context. This information may be useful for linking infrastructure changes to application features, but is NOT required.
Extract all ## Arness config fields for use throughout the wizard:
- Experience level -- derived from user profile (see experience-derivation.md). If no profile exists, check for legacy
Experience levelin## Arnessas fallback. - Deferred -- triggers assessment-driven entry mode
- Providers config -- path to
providers.md - Environments config -- path to
environments.md - Tooling manifest -- path to
tooling-manifest.json - Resource manifest -- path to
active-resources.json - Default IaC tool -- for artifact detection
- Project topology -- for context
- CI/CD platform -- for CI/CD context (github-actions, gitlab-ci, bitbucket-pipelines, none)
- Issue tracker -- for triage entry mode detection
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday First seen · 439 lines · 140 tokens per session scan A dde8d46cf562
arn-infra-wizard is a skill published in the GitHub repository AppsVortex/arness (33 stars, last pushed yesterday), licensed MIT. It adds 140 tokens to every session and 4,547 once invoked, about $0.0006 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 2026-10-25.
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