Give Your AI Agent a Cost Dashboard — From Blind Spend to Live Token Tracking in One Session

Paste this into Claude Code, Cursor, or Aider and it'll walk your agent codebase through capturing the token-usage data your LLM responses already return — and that you're almost certainly throwing away — pricing it from a local rate table, persisting one row per call, and surfacing a live month-to-date cost indicator with a click-to-expand breakdown: per model, cache savings, and day by day. Interview first, then build tier by tier. Each tier ships independently with verification.