Malini: open-source macOS app side-by-side replays Claude Code UI changes
Szymeo · reddit · 2026-11-12
A developer released Malini, a free open-source macOS app that runs Claude Code agents in parallel (one git worktree each) and records before/after screen captures whenever an agent changes visible UI.
- Motivation: Opus changing an animation produced a wall of text instead of a visual delta
- Each turn ends with a short report card: two clips played side by side, with play/pause, frame stepping, synced scrubbing and speed control; the agent marks the second where they differ most
- Below the clips: one line on what changed and one on how the agent verified it (e.g. clean console, 75 e2e tests passing)
- The card itself was mostly written by Claude Code (Opus), following the rule "record before, record after, prove it in the real app"
AGPL-3.0 licensed; report card source is on GitHub.
Related event: Open-source Malini replays Claude Code UI changes side by side(2 posts)→
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