Claude Code users routinely spend more on tokens than they expect, and cannot see where the money goes. This practical guide diagnoses specific token-waste patterns with real cost data from 800+ hours of production Claude Code usage, then gives you measured, proven fixes.
You will learn why token costs spike overnight and the first settings to check, the hidden costs of sub-agents, thinking tokens, and context-window bloat, and a systematic chapter-by-chapter diagnostic workflow with real dollar figures. Not theory, not prompt packs: measured, diagnosed, and fixed.On June 15, 2026, Claude Code headless and automated usage (claude -p, the Agent SDK, and CI pipelines) moves to a separate, capped credit pool metered at full API rates, with no rollover. Suddenly every wasted token costs real money. This book is how you cut that usage in half.
Drawing on real cost data from 800+ hours of production Claude Code usage, it diagnoses specific token-waste patterns and gives measured, proven fixes: why costs spike overnight and the first settings to check, the hidden costs of sub-agents, thinking tokens, and context-window bloat, and a systematic chapter-by-chapter diagnostic workflow with real dollar figures. Not theory, not prompt packs: measured, diagnosed, and fixed.
