See exactly how full your Claude Code context window is — right from your terminal.

npx cc-context-check

Reads token usage directly from your ~/.claude/projects/ session transcripts and shows:

• Context fill % with a color-coded progress bar
• Token counts: input used (including cache), output, remaining
• Smart warnings: yellow at 70%, red at 85% (time to /compact)
• Last 5 active sessions across all your Claude Code projects

cc-context-check — Context window usage across sessions

Context limit: 200.0k tokens (Claude Sonnet/Opus)

🟢 ~/projects/my-app    [a3f9c12] just now · 12.4 MB
   ████████████░░░░░░░░░░░░░░░░░░ 40.1% used
   80.2k input · 1.2k output · 119.8k remaining

🟡 ~/                   [b7d44e1] 2h ago · 5.9 MB
   █████████████████████░░░░░░░░░ 71.5% used
   143.0k input · 89 output · 57.0k remaining
   △ Warning: Context is getting full — consider /compact

--all, -a    Show top 20 sessions instead of 5
--json       JSON output for scripting

Claude Code's context window is 200k tokens. When it fills up, responses slow down and you lose context of earlier work. /compact compresses history — but knowing when to compact is guesswork without this tool.

cc-context-check reads the actual input_tokens, cache_read_input_tokens, and cache_creation_input_tokens from your session files to give you the real number.

One of 79 free tools for Claude Code users → cc-toolkit

MIT