Releases

The first release of Nebula: a native macOS screen recorder that edits itself, written in Swift and scriptable from Claude.

Highlights

Record a display, a window or an area at native Retina resolution and 60 fps, with microphone and system audio. A floating pill lets you pause, restart, discard or stop. Nebula's own windows never appear in the recording.
Polish in one click. Zooms on clicks and typing, cuts dead air, speeds up long typing, and smooths the cursor. It's one undo step and leaves your own edits alone.
Real desktop look. Window and area recordings keep their true size over the wallpaper that was behind them, on a screen-shaped frame. Full-screen recordings fill the frame.
Video-editor timeline. Split (C), trim either edge, ripple-delete, and set speed per clip. Zooms, blur, pixelate and spotlight masks, text and arrows, per-section volume, and music that ducks under your voice.
On-device captions with Whisper, plus noise reduction.
Export MP4 (H.264 or HEVC, up to 4K60) or GIF, or copy the video or a frame to the clipboard.
⌘K command palette, style presets, a project library, and .openscreen project import.
Built-in MCP server. Claude can read the timeline, Polish, edit, record and export, live in the editor and undoable with ⌘Z.

Open Nebula-1.0.0.dmg and drag Nebula to Applications.
This build is signed but not notarized, so the first time, right-click Nebula → Open, then confirm.
Allow Screen Recording when asked, then reopen Nebula. Microphone and Accessibility are optional; Accessibility lets Polish see clicks and text fields.

Requires macOS 15 or later.

claude mcp add --transport http --scope user nebula http://127.0.0.1:39351/mcp

SHA-256 of Nebula-1.0.0.dmg: 9ca6274d1035f0028f050d30c701a67fc2ec6fd9a4595cd93380992e9beb0745