Lets your agent edit the video you have open in CartCut: cut from the transcript, add subtitles, trim clips, and add motion and effects.
by cartesiancs· MediaUnclaimed · Yours? Claim it
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About
The MCP bridge for CartCut, Cartesiancs' free, open-source desktop video editor. Your agent edits the project you have open, live: it cuts from a transcript, adds subtitles, trims and rearranges clips, and adds motion, transitions and effects. Every edit lands in CartCut's own undo history, so Cmd+Z takes it back. What you can do with it - Transcribe a clip with timings already on the timeline, then cut many ranges in one edit, such as every long pause or false start - Find silences, beats and hits in a clip's audio to place cuts - Add subtitles, titles, graphics and animated typography - Trim, split, move, speed up, duplicate, merge or delete clips, and manage tracks - Animate with keyframes and presets, and add transitions, effects, colour adjustments, LUTs, crops and masks - Plan a whole edit, apply it as one undo step, then look at a contact sheet of the result How it connects CartCut runs an MCP server inside the app on your computer (http://127.0.0.1:9826/mcp). This package, @cartesiancs/cartcut-mcp, is the stdio bridge your agent starts with npx: it relays every message to the app and reads CartCut's token from CartCut's own settings, so it needs no setup (or set CARTCUT_MCP_TOKEN to the token under the lightning icon at the bottom right of the CartCut window). It needs Node.js 18 or later. CartCut documents setup for Claude Code, Claude Desktop, Cursor and Codex. On Claude Code, CartCut also offers a plugin from its own marketplace (cartesiancs/cartcut) that adds its cartcut-editing skill, which teaches the agent its editing rules. Good to know - CartCut has to be open, with a project loaded. Its download is for macOS (Apple Silicon and Intel). - The bridge only talks to CartCut on your computer. If CartCut closes during a tool call, the call returns an error rather than being retried. - Transcription uses macOS's on-device recogniser, an OpenAI API key or a local WhisperX server; edits that don't read speech need none of them. - CartCut is free, with no watermark.
Once it’s added
“Cut the silences out of this interview.”
“Add subtitles.”
Before you add it
Reads only
The open project: its clips, tracks, assets, fonts and your selection · Transcripts of clips, and the silences and beats in their audio · A contact sheet of frames from your edit
Makes changes · your agent can ask first
Cuts, trims, splits, moves and deletes clips (Cmd+Z takes it back) · Adds subtitles, titles, graphics, transitions and effects · Animates clips with keyframes and presets · Grades colour with adjustments and LUTs
From people who use it
Step by step
Nothing new reaches your agent until a person has looked at it.
Plugins people install alongside CartCut.
No reviews yet. Used CartCut? Say how it went.
Write a reviewRuns on your machine.
claude_desktop_config.json{
"mcpServers": {
"cartcut": {
"command": "npx",
"args": [
"-y",
"@cartesiancs/[email protected]"
]
}
}
}Runs on your machine.
Add to VS Codecode --add-mcp '{"name":"cartcut","command":"npx","args":["-y","@cartesiancs/[email protected]"]}'copilot mcp add cartcut -- npx -y @cartesiancs/[email protected]
Runs on your machine.
Add to Cursor.cursor/mcp.json{
"mcpServers": {
"cartcut": {
"command": "npx",
"args": [
"-y",
"@cartesiancs/[email protected]"
]
}
}
}Runs on your machine.
claude mcp add cartcut -- npx -y @cartesiancs/[email protected]
Runs on your machine.
codex mcp add cartcut -- npx -y @cartesiancs/[email protected]
Runs on your machine.
~/.gemini/config/mcp_config.json{
"mcpServers": {
"cartcut": {
"command": "npx",
"args": [
"-y",
"@cartesiancs/[email protected]"
]
}
}
}Runs on your machine.
gemini mcp add cartcut npx -y @cartesiancs/[email protected]
Runs on your machine.
Runs on your machine.
opencode mcp add cartcut -- npx -y @cartesiancs/[email protected]
Runs on your machine.
~/.hermes/config.yaml{
"mcp_servers": {
"cartcut": {
"command": "npx",
"args": [
"-y",
"@cartesiancs/[email protected]"
]
}
}
}CARTCUT_MCP_TOKENOptionalSecretOptional. CartCut's MCP token; read from CartCut's own settings when unset.Scanned and passed · checked 4 h ago
Plugins people install alongside CartCut.
Ask for a video and your agent writes it as HTML, then HyperFrames renders it to MP4: promos, explainers, captions and motion graphics.
Turns screenshots or a description into a narrated product demo video, with a story arc, designed scenes and an FFmpeg build script.
Lets your agent search screenpipe's local recordings of everything on your screen and microphone, from meetings to what you typed.
Nobody has shared how they use CartCut yet.
“Cut the first 30 seconds.”
“Remove the ums and false starts from this take.”
“Punch in when he raises his voice.”
“Tighten this into a short cut and show me how it looks.”
Scanned on every change, and again when our rules improve.
CursorSupported
Claude CodeSupportedTell us and a person on the trust team will look at it. Or email [email protected].
Security scan
Passed
Safe to install in every agent it supports. Runs on your machine.