overview / commands / rabadon lens
rabadon lens [transcript.jsonl | dir] [--days N]Alias: rabadon cost. Sessions, tokens and cost, read straight off the transcripts Claude Code already writes to disk. Zero instrumentation: nothing has to be wrapped, no key is needed, and no model is called to produce any number here — the metering is byte-exact arithmetic over files that are already on your machine.
maturity: stable — shipping and tested
One row per session: project, model, input / output / cache tokens, total tokens, cost in USD, tool calls, wall duration.
Argument: a single transcript, or a directory of them. Omitted, it reads $RABADON_LENS_DIR, else ~/.claude/projects.
Flags: --days N (window, default 7).
Exit: 0.