Claude API Cost Tracking

Overview

Track and report Claude API usage costs per session with exact pricing, aggregation, and frontend display.

Core principle: Track every call. Use exact pricing. Display to users. Provide /cost command.

Announce at start: "I'm using the claude-mobile-cost-tracking skill for cost tracking implementation."

When to Use

• Implementing cost tracking service (Task 3.11)
• Integrating cost display in Settings screen
• Implementing /cost slash command
• Calculating API costs
• Displaying cost metrics to users

Exact Pricing (Claude Sonnet 4)