Mindwalk Replays Coding-Agent Sessions as a 3D Night Map Where Reads Glow Cool and Edits Glow Warm
cosmtrek/mindwalk (MIT, v0.2.0 on 2026-07-15) from Ricko Yu — author of the Go live-reload tool air — hit 724 stars since 2026-07-09. It renders your repo as a 3D 'citymap' and replays a Claude Code or Codex session across it: searches and reads light up cool, edits light up warm, so an agent's understanding of a task is legible at a glance from file touches and exploration patterns. Architecture is three parts: a normalized trace of file-touch events, a deterministic repo layout, and optional LLM evaluation, with a React/Three.js frontend offering tree and terrain views, touch states (seen/read/edited/unvisited), and timeline scrubbing. This is observability for agent behavior rather than agent output — a category with almost nothing else in it.
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