Claude Code mod

context-guard

Per-session context-window observability. A mod writes each session's context-window figures to a snapshot file and shows the person a toast and a transcript line when the context zone (smart, acceptable or dumb, from bands in zones.json) worsens; with model_notices on (off by default) it also tells Claude the zone at each crossing, approach and compaction. /context-guard prints status and toggles an optional band row. It answers a status tool. A PostCompact hook leaves a marker.

28 starsContext & usage mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add melodic-software/claude-code-plugins
/plugin install context-guard@melodic-software

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach
L2Writes or runs: runs processes, drives Claude, writes the prompt box, reads files, reads env vars, reads the prompt box, draws
Sees
compaction, every prompt, every tool call
Draws in
AbovePrompt
Hooks
session.startsession.endsession.compactprompt.submitsession.measureturn.startturn.completecommand.runui.rendertool.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.
Claude Code docs

Details

Repository
melodic-software/claude-code-plugins
Folder
plugins/context-guard
Marketplace
melodic-software
Author
Melodic Software
Type
Context & usage mods
License
MIT
Last updated
1 November 2026
Listed in
awesome-claude-code-mods

FAQ

What is context-guard?

Per-session context-window observability. A mod writes each session's context-window figures to a snapshot file and shows the person a toast and a transcript line when the context zone (smart, acceptable or dumb, from bands in zones.json) worsens; with model_notices on (off by default) it also tells Claude the zone at each crossing, approach and compaction. /context-guard prints status and toggles an optional band row. It answers a status tool. A PostCompact hook leaves a marker. It is a mod for Claude Code, from melodic-software/claude-code-plugins on GitHub.

What can the context-guard mod access?

Its widest reach is "writes or runs" (runs processes, drives Claude, writes the prompt box, reads files, reads env vars, reads the prompt box, draws). It sees compaction, every prompt, every tool call. It draws in AbovePrompt. Like any mod, it runs with your permissions.

How do I install context-guard?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add melodic-software/claude-code-plugins and then /plugin install context-guard@melodic-software.

Is context-guard popular?

melodic-software/claude-code-plugins has 28 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 1 November 2026.

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