arn-code — Claude Code plugin: what it does, how to install
arn-code guides feature work through specs, planning, implementation, review, and shipping. Three ceremony levels adapt the workflow to the size of the change.
/plugin marketplace add anthropics/claude-plugins-community
/plugin install arn-code@claude-communityWhat arn-code does
arn-code turns a feature request into a staged workflow. It creates a specification, plan, and structure, then moves through execution, review, and release preparation. Each stage leaves a Markdown or JSON artifact for the next one to use. The swift, standard, and thorough levels let the process fit anything from a small file change to a cross-cutting refactor.
The plugin includes pipeline skills and specialist agents, plus arn-code-batch-cve-scan for vulnerability discovery and triage and arn-code-batch-cve-fix for batch remediation. Both can run unattended through Claude Code Routines. Execution stays on the local machine: git and gh use your existing credentials, while Claude Code handles its own Anthropic API traffic.
What it helps with
- move a feature from specification to release
- pass structured artifacts between development stages
- review changes before shipping them
- scan a project for CVEs and triage findings
- apply batch fixes for discovered vulnerabilities
Example prompts for the agent
- Take this feature from specification through planning, implementation, review, and release using the
standardceremony level. - Run
arn-code-batch-cve-scanto find project vulnerabilities and triage the results. - Use
arn-code-batch-cve-fixto apply batch fixes through Claude Code Routines.
How to install arn-code
Plugin marketplace
/plugin marketplace add anthropics/claude-plugins-community/plugin install arn-code@claude-communityStep by step, with commands for each platform: Claude Code plugins: marketplaces, installing, and building your own
Questions about arn-code
How do I install arn-code in Claude Code?
Add the marketplace with /plugin marketplace add anthropics/claude-plugins-community, then install the plugin with /plugin install arn-code@claude-community.
What does arn-code do?
It leads feature work through specification, planning, structure, execution, review, and release. Markdown or JSON artifacts carry the output of one stage into the next.
Can its CVE jobs run unattended?
Yes. arn-code-batch-cve-scan and arn-code-batch-cve-fix are available for unattended runs through Claude Code Routines.
Source text
arn-code · MIT
# Arness Code Structured, artifact-driven development pipeline for Claude Code. Every feature flows through spec, plan, structure, execute, review, and ship — producing a durable Markdown or JSON artifact at each stage that feeds the next. Three ceremony tiers (swift, standard, thorough) scale process to match scope, from a one-file fix to a cross-cutting refactor. Also includes `arn-code-batch-cve-scan` and `arn-code-batch-cve-fix` for CVE discovery, triage, and batch resolution — safe to run unattended via Claude Code Routines. Ships 37 pipeline skills and 18 specialist agents. ## Install ``` # Add the Arness marketplace (one-time) /plugin marketplace add AppsVortex/arness # Install this plugin /plugin install arn-code@arn-marketplace ``` ## Documentation Full guide: [docs/plugins/arn-code.md](../../docs/plugins/arn-code.md) · [arness.appsvortex.com](https://arness.appsvortex.com/) ## License MIT. See [LICENSE](./LICENSE). ## Privacy Arness Code runs entirely inside Claude Code on your local machine. The plugin emits no telemetry, collects no usage data, and transmits nothing off-device on its own — all skills and agents operate on files in your working directory. Claude Code (the host harness) handles its own Anthropic API communication; refer to [Anthropic's privacy policy](https://www.anthropic.com/legal/privacy) and [Claude Code's data usage documentation](https://code.claude.com/docs/en/data-usage) for details on how the host processes your prompts and context. Integrations with `git` and the GitHub CLI (`gh`) are invoked locally using your existing credentials — the plugin does not intermediate, store, or forward credentials.
© AppsVortex · MIT · AppsVortex/arness
