Cost Accrual Tracker Real-time tracking of API costs during LLM execution with support for partial costs on abort. When to Use ✅ Use for : - Implementing real-time cost tracking during execution - Capturing partial costs when executions are aborted - Building cost display widgets for execution UIs - Integrating token counting into execution pipelines - Adding budget thresholds with auto-stop ❌ NOT for : - Cost estimation before execution (use pricing calculators) - Billing system design (use billing-system skill) - Price tier management or discounts - Historical cost analytics dashboards Core…