An open-source, Swift-native macOS video editor built for AI: its timeline is exposed as a local MCP server, so agents like Claude, Codex, and Cursor can generate footage, trim, and reorder clips directly.
Last verified · 2026-07-23 · by Moe Ameen
Palmier Pro is a macOS video editor built around AI from the ground up. It comes from Palmier, Inc., a Y Combinator company (Summer 2024 batch) that originally built an AI coding agent and, in June 2026, released this editor instead. It's written natively in Swift with Premiere Pro as the design reference point, and it targets a modern Mac: at launch it required macOS 26 (Tahoe) on Apple Silicon. Confirm the current system requirements before assuming your machine qualifies.
The idea that makes it distinct is that the editing timeline is exposed as a local MCP (Model Context Protocol) server. That means an external agent — Claude, Codex, or Cursor among them — can connect to the project and operate the timeline directly: generate video, images, and audio, find key moments in long footage, transcribe audio, and trim and reorder clips, without you switching between apps. Alongside the agent integration, the editor has built-in generative AI that calls models such as Seedance, Kling, and Nano Banana Pro to create clips and images inside the project.
The open-source picture is partial and worth stating plainly. Palmier says the video editor itself (without the generative AI features), the MCP server, and the agent chat are open source under GPLv3, while the generative-AI processing stays proprietary. The editor is free to download and use with no account required; generating with the AI models requires an account and is billed by credits. At launch the paid tiers were reported around $29/mo (Pro) and $69/mo (Max) with monthly credit allotments — treat those figures as a launch-pricing snapshot and check the current numbers directly.
Palmier Pro and Kompozy share a lineage — both let an AI agent do real production work rather than just suggest — but they sit at opposite ends of the pipeline, and that's exactly why they pair well. Palmier is a hands-on desktop editor: it's where an agent operates a Mac timeline to generate footage and cut a single, polished long-form video. What it deliberately does not do is the last mile — it doesn't caption for the feed, reframe to 9:16 / 1:1 / 16:9, spin one edit into the other formats a launch week needs, or publish anywhere. That downstream job is Kompozy's.
Concretely: export your finished cut from Palmier, bring it into Kompozy as a source, and Kompozy fans it out. It runs Clipped Shorts to pull the strongest vertical moments, burns word-synced captions, and reframes each cut per platform; it spins the same idea into brand-exact Carousel Posts via HyperFrames, Quote Graphics, a Blog Article, and an Email Newsletter; and where a Mac editor can't follow, it generates net-new Persona Shorts and HeyGen avatar video with a face-locked recurring identity to wrap around your Palmier footage. A Persona Brief holds one voice across all of it. Then Autopilot and a per-post review pipeline schedule and publish the whole batch across the eight social platforms plus blog and email from one queue. Palmier makes the one great video on your desktop; Kompozy turns it into a published, on-brand week everywhere you post.
Palmier Pro is an open-source, Swift-native macOS video editor built for AI, released in June 2026 by Palmier, Inc. (a YC S24 company). Its timeline is exposed as a local MCP server, so agents like Claude, Codex, and Cursor can generate footage and edit clips directly, and it has built-in generative AI using models such as Seedance, Kling, and Nano Banana Pro.
The editor itself, the MCP server, and the agent chat are open source under GPLv3, and the editor is free to download with no account required. The generative-AI processing is proprietary and billed by credits — you only pay when you generate with the AI models. At launch the paid tiers were reported around $29/mo and $69/mo; confirm current pricing directly.
At launch Palmier Pro required macOS 26 (Tahoe) running on Apple Silicon — it's a native Mac app, not a web or Windows tool. Check the project's current requirements before installing, since these can change across versions.
Palmier is a desktop editor — it doesn't caption, reframe, or publish. Export your finished cut and bring it into Kompozy, which clips it into captioned vertical Shorts, reframes each to 9:16/1:1/16:9, generates carousels and blogs from the same idea, and schedules the batch across the eight social platforms plus blog and email.