cctime - Claude Code Response Time Analyzer

Analyze response times from Claude Code sessions to understand performance patterns and optimize your AI-assisted development workflow.

Features

• 📊 Daily Response Time Analytics: Track how long Claude takes to respond to your messages
• 📈 Trend Visualization: ASCII charts showing response time trends over time
• 🗂️ Session Analysis: Break down response times by individual sessions
• 📊 Statistical Insights: Percentiles (P50, P90, P99), averages, and totals
• 💾 Multiple Export Formats: JSON, CSV, and Markdown reports
• 🎨 Interactive Terminal UI: Built with Ink (React for CLIs)
• ⚡ Real-time Updates: Watch mode for monitoring active sessions

Installation

# Clone the repository
git clone https://github.com/EveryInc/cctime.git
cd cctime

# Install dependencies with Bun
bun install

# Run the CLI
bun run src/cli.tsx

Usage

Interactive Mode (default)

# Launch interactive dashboard
bun run src/cli.tsx

# Navigate with keyboard:
# - ↑/↓: Navigate table rows
# - Tab: Switch between table and chart
# - Enter: View details for selected date
# - s: Cycle sort options
# - e: Export data
# - q: Quit

Command Line Options

# Analyze specific date range
bun run src/cli.tsx --from 2024-01-01 --to 2024-01-31

# Export directly without interactive mode
bun run src/cli.tsx --no-interactive --export report.json --export-format json

# Export as CSV
bun run src/cli.tsx --no-interactive --export report.csv --export-format csv

# Export as Markdown report
bun run src/cli.tsx --no-interactive --export report.md --export-format markdown

How It Works

cctime analyzes the JSONL transcript files that Claude Code stores locally:

• Location: ~/.claude/projects/{project-path}/{sessionId}.jsonl
• Calculates time between user messages and Claude's responses
• Aggregates data by day, session, and overall statistics
• Provides insights into Claude's response patterns

Export Formats

JSON Export

Complete data structure with all metrics, suitable for further analysis.

CSV Export

Tabular format with daily breakdowns, perfect for spreadsheet analysis.

Markdown Export

Human-readable report with tables and statistics, great for documentation.

Architecture

Built using a parallel development approach with 5 independent streams:

1. Data Processing: JSONL parsing and response time calculation
2. File System: Session discovery and caching
3. UI Components: Ink-based terminal UI components
4. State Management: React-style state handling
5. CLI & Config: Command-line interface and configuration

Core Modules

• src/parser/: JSONL file parsing
• src/calculator.ts: Response time calculations
• src/aggregator.ts: Data aggregation and statistics
• src/finder.ts: Claude session file discovery
• src/components/: Ink UI components
• src/export/: Export functionality

Development

# Run tests
bun test

# Run demo with sample data
bun run demo.ts

# Test core functionality
bun run test-minimal.ts

Configuration

Create ~/.cctime/config.json:

{
  "theme": {
    "primaryColor": "cyan",
    "successColor": "green",
    "errorColor": "red"
  },
  "analysis": {
    "outlierThresholdMs": 300000,
    "defaultDateRangeDays": 30
  },
  "export": {
    "defaultPath": "./exports",
    "includeDetailedStats": true
  }
}

License

MIT