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Most “AI video” tools generate a clip and hand it back. Palmier Pro, an open-source macOS editor built from scratch in Swift, instead lets an agent work inside your actual timeline — Claude, Codex, or Cursor connect to the app and trim, split, arrange, and generate footage alongside you.

## What Palmier Pro is

It looks like a normal multi-track editor — video, audio, image, and text tracks, with trim, split, speed, opacity, and transform — usable like CapCut or Premiere with no login. The twist is generation in place: you can call Seedance, Kling, and Nano Banana Pro to make video and images directly on the timeline rather than importing from another app. The editor itself is free to download.

## Agent-native editing

The mechanism is the interesting part. The Mac app opens an MCP server on localhost, so your coding agent connects and edits the real project, not a copy. You describe a change and the agent executes it on the timeline, or you use the built-in agent on the same file. It needs macOS 26 (Tahoe); generative features require a subscription, but the editor and MCP server are free.