Cost Track

Reads the active Claude Code session jsonl (~/.claude/projects/<encoded-cwd>/<session>.jsonl), tallies assistant-message usage per model, computes USD cost using REFERENCE.md pricing, and writes a structured record to the cost-tracking AgentDB namespace. This is the producer that gives cost-report and cost-optimize real data to consume.

When to use

• After a meaningful chunk of work, to capture spend for the report.
• At session-end to persist the final tally.
• Periodically during long sessions (cron-friendly — see /loop 30m).

Steps

1. Run the tracker from the project root:

   node plugins/ruflo-cost-tracker/scripts/track.mjs
   

   The script auto-discovers the session jsonl from the current working directory. To pin a specific session: TRACK_SESSION=/path/to/session.jsonl. To dry-run (no memory write): TRACK_DRY_RUN=1.