Claude Code mod
next-boundary-guard
Refuses Next.js app router edits that break the client/server boundary: hooks without 'use client', or server-only code inside a client file
Install
/plugin marketplace add MatheusChiodi/cockpit
/plugin install next-boundary-guard@cockpitMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L1Reads: reads files, reads mod state
- Sees
- Write calls, Edit calls
- Hooks
tool.call
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- MatheusChiodi/cockpit
- Folder
mods/next-boundary-guard- Marketplace
cockpit- Author
- Matheus Chiodi
- License
- MIT
- Last updated
- 18 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is next-boundary-guard?
Refuses Next.js app router edits that break the client/server boundary: hooks without 'use client', or server-only code inside a client file It is a mod for Claude Code, from MatheusChiodi/cockpit on GitHub.
What can the next-boundary-guard mod access?
Its widest reach is "reads" (reads files, reads mod state). It sees Write calls, Edit calls. Like any mod, it runs with your permissions.
How do I install next-boundary-guard?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add MatheusChiodi/cockpit and then /plugin install next-boundary-guard@cockpit.
Is next-boundary-guard popular?
MatheusChiodi/cockpit has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 18 October 2026.
More guard & safety mods
meadow
1DenisGuiraudet/claude-mods
Claude's replies as pixel bubbles: a short sky and hill on top, a strip of grass under the last block
nexus
1darkomarijaan/nexus-mod
All-in-one workspace suite: HUD and session monitor, prompt enhancer, assumption review, command shield, secret masking, turn checkpoints with rollback, visual design previews, auto-verify and clean delivery.
limit-guard
1burnrate-ai/burnrate
Warns when the prompt cache is invalidated; near the 5h cap blocks subagents and wide scans and asks Claude for short answers.
notch-hud
1skuvshin0v/notch-hud
A Dynamic Island-style HUD around the MacBook notch for Claude Code: session progress at a glance, answer questions and permission requests without going back to the terminal. macOS 15+ on Apple Silicon.
lens
1PedroLaRosa/claude-code
Puts tsc, linter and secret-scan diagnostics in the result of every Edit and Write, so Claude fixes what it broke in the same turn
read-guard
1LupusMalusDeviant/mod-box
Holds a whole-file Read (no offset/limit) of a file above the limit, a lockfile, minified code or a source map, and the same via cat, type or Get-Content in the shell; tells Claude the size, a token estimate and a better way (Grep, offset/limit). A second try at the same file goes through, and so does a Read with allow_large. Claude Code itself stops only at about 25,000 tokens.
Browse the most popular Claude Code mods, all guard & safety mods, or the skills and MCP server directories.