Agent Usage Tracker

Use this skill when you need local token accounting for AI agents.

What it provides

• Real-time token usage persistence in SQLite
• Cost calculation based on per-model pricing
• Budget thresholds with persisted warning and blocking states
• Usage statistics grouped by time window, session, or model

Files to use

• src/UsageTracker.ts: ingestion, storage, and reporting
• src/CostCalculator.ts: pricing catalog and cost math
• src/BudgetManager.ts: budget policy evaluation
• examples/basic-usage.ts: end-to-end usage example
• tests/: reference behavior for tracking, budgeting, and aggregation