Writing

Investigations, teardowns, and occasional essays. 3 posts so far.

APR 19, 2026 ai-harnessai-engineeringdeveloper-toolsresearch

The Space Between You and the Model

How much do you really know about the AI tools that sit between you and the models you use? Look a little closer, and you may be surprised by what’s there. Here’s what I learned.

14 min

002

MAR 22, 2026 claude-codedeveloper-toolsmetricsresearch

Claude Code Token Metrics: Technical Appendix

Source code verification, data model reference, pricing tables, reproduction scripts, and the full format evolution timeline behind our token metrics investigation.

12 min

001

MAR 22, 2026 claude-codedeveloper-toolsmetricsresearch

Understanding Claude Code Token Metrics: What the Numbers Actually Mean

I got 4 different token counts from the same usage data. After reverse-engineering the JSONL format and reading every tool's source code, here's what's actually going on.

11 min