Claude Context Bar

Real-time context window monitor for Claude Code sessions in VS Code

Features

🧠 Live Context Tracking — See your Claude Code context usage percentage right in the status bar

⚡ Per-Tab Monitoring — Each Claude Code tab gets its own context indicator

🎨 Auto Color Mode — Each project automatically gets a unique pastel color for easy identification

🔍 Smart Context Detection — Automatically detects your model (Sonnet 4.5 1M vs others) and adjusts the context limit accordingly

⚠️ Color-Coded Warnings:

Normal: Under 50% usage
Warning (yellow background): 50-75% usage
Danger (red background): Over 75% usage

📊 Detailed Tooltips — Hover to see:

Model name
Cache Read / Cache Creation / New Input tokens
Total context used vs limit
Last updated time

🔄 Auto-Refresh — Updates automatically when sessions change or every 30 seconds

Requirements

VS Code 1.74.0 or later
Claude Code extension installed and active

Install:

VS Code Marketplace
Open VSX Registry (for Antigravity, VSCodium, etc.)

Configuration

Setting	Default	Description
`claudeContextBar.autoColor`	`true`	Automatically assign unique pastel colors to each project
`claudeContextBar.baseColor`	`White`	Base color when Auto Color is off (subtle variations per project)
`claudeContextBar.contextLimit`	`200000`	Fallback context limit (auto-detected for most models)
`claudeContextBar.warningThreshold`	`50`	Percentage for yellow warning
`claudeContextBar.dangerThreshold`	`75`	Percentage for red danger
`claudeContextBar.refreshInterval`	`30`	Refresh interval in seconds

How It Works

The extension reads Claude Code's session files from ~/.claude/projects/ and calculates token usage from the JSONL logs. It automatically detects which model you're using and adjusts the context limit:

Claude Sonnet 4.5 1M: 1,000,000 tokens
All other models (Sonnet 4.5, Opus 4.5, Haiku): 200,000 tokens

Sessions inactive for more than 5 minutes are automatically hidden.

Claude Context Bar

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Claude Context Bar

Features

Requirements

Configuration

How It Works

License