Tools

Built because the experiment needed them. They run in your browser; nothing is uploaded.

• Claude Code session cost calculator

  Drop your Claude Code session logs (the JSONL files in ~/.claude/projects) and see what each session would have cost at API list prices, per model, per counter. Runs entirely in your browser, nothing is uploaded.

  updated 2026-09-09
• CLAUDE.md check: what it costs per session and what does not belong in it

  Paste your CLAUDE.md. See its size in tokens and dollars per session, the lines that are statuses pretending to be rules, and the procedures that should be skills loaded on demand. Runs in your browser.

  updated 2026-09-09