TL;DR : I built Toki — a Rust daemon that replaces ccusage for Claude Code / Codex token tracking. ~1,742× faster on warm queries, near-zero overhead. Two optional layers sit on top: toki-monitor (macOS menu bar app) and toki-sync (self-hostable sync server). FSL-1.1-Apache-2.0, solo project. The problem: ccusage was making my laptop crawl I'm a Korean dev who burns a lot of tokens in Claude Code and Codex. At my workplace we'd been keeping a half-joking ccusage leaderboard of who was burning the most that week. It was fun — until we wired it into a hook to auto-run on every session, and our laptops started visibly slowing down. Looking at ccusage's design, the cause was clear. Every invocation re-walks ~/.claude and ~/.codex and re-parses every JSONL session file from scratch, single-threaded. The Zig multi-threaded fork that tries to fix this still re-reads every byte and scales memory linearly with input.…