A structured development workflow for Claude Code, the coding assistant. It organizes feature work into planning, implementation, review, and release stages, with different levels of process, plus tools for finding and fixing batches of CVEs, which are publicly recorded software security flaws.

Use it to plan, build, review, and ship features, or to scan for and resolve multiple dependency vulnerabilities.

It gives a project a repeatable record of decisions and checks instead of relying on informal instructions. This helps coordinate larger feature work and security fixes.

arn-code — Plugin by AppsVortex

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.

Claude Code

/plugin marketplace add AppsVortex/arness

agentmods

npx agentmods add plugins/appsvortex/arness/arn-code

Clone the repo

git clone --depth 1 https://github.com/AppsVortex/arness

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

arn-code 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.

plugins/arn-code/.claude-plugin/plugin.json · 10 lines

What it actually says

{
  "name": "arn-code",
  "repository": "https://github.com/AppsVortex/arness",
  "author": {
    "name": "Fryderyk Benigni",
    "url": "https://github.com/fredcallagan"
  },
  "description": "Structured, artifact-driven development pipeline for Claude Code — plan, implement, review, and ship features with three ceremony tiers. Also includes arn-code-batch-cve-scan and arn-code-batch-cve-fix for CVE discovery, triage, and batch resolution. 37 pipeline skills, 18 specialist agents."
}

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.

yesterday First seen · 10 lines scan A b0dcacff5fd6

Subscribe to this mod's changes

arn-code is a plugin published in the GitHub repository AppsVortex/arness (33 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Code review Git and workflow Security ai-workflows claude-code claude-code-plugin developer-tools infrastructure-as-code mcp

arn-code

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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