Claude Code mod
contextmanager
Watches a session for wasted context and time, shows a one-click card when a waste behaviour repeats, and lets the user steer or stop it.
Install
/plugin marketplace add devohmycode/claude-mods
/plugin install contextmanager@claude-devohmycode-modsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, writes files, drives Claude, reads files, reads env vars, reads the transcript, persists state, draws
- Sees
- every skill, every tool call, compaction, every prompt
- Draws in
AbovePromptPane- Hooks
engine.createskill.promptsession.startturn.starttool.callturn.completeturn.stepsession.compactprompt.submitui.rendercommand.runconfig.describeui.close
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
- devohmycode/claude-mods
- Folder
context-manager- Marketplace
claude-devohmycode-mods- Author
- DevOhMyCode
- License
- MIT
- Last updated
- 5 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is contextmanager?
Watches a session for wasted context and time, shows a one-click card when a waste behaviour repeats, and lets the user steer or stop it. It is a mod for Claude Code, from devohmycode/claude-mods on GitHub.
What can the contextmanager mod access?
Its widest reach is "writes or runs" (runs processes, writes files, drives Claude, reads files, reads env vars, reads the transcript, persists state, draws). It sees every skill, every tool call, compaction, every prompt. It draws in AbovePrompt, Pane. Like any mod, it runs with your permissions.
How do I install contextmanager?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add devohmycode/claude-mods and then /plugin install contextmanager@claude-devohmycode-mods.
More context & usage mods
context-watch
narrowstacks/claude-code-mods
Context fill, cost and rate limits in the status line; threshold toasts; compaction that keeps edited files; /ctx breakdown
ctx-keeper
irfanfaraaz/claude-kit
Cache countdown, context, limits and cost band; past 350k it runs /re-fresh, copies it, compacts and pastes it back
context-forecast
mercynet/my-claude-mods
Forecast of the context window with a clear-or-compact score, usage limits, cross-session calibration and guided compaction.
golfo
pompeitech/affreschi
Il Golfo: what Claude Code costs you day by day, across sessions and projects, with a weekly budget that warns you at 80% and 100%
cache-clock
thorstenalpers/claude-code-mods
A prompt-cache line under your status line: minutes left while warm, and how many tokens the next message re-caches once cold. /cache-clock setup adds it.
lean-docs
bahaospanov/skills
Docs worth keeping: docs-review asks Haiku whether new text will be read again, docs-no-repeat-code flags lines that may restate code, limit-docs shows a one-line notice when a turn adds too much prose.
Browse the most popular Claude Code mods, all context & usage mods, or the skills and MCP server directories.