A Premiere-style editor whose whole timeline is one JSON file. Any agent that writes JSON can edit video.
Zero npm dependencies. One node server.js. MIT licensed.
editing timeline 0s 0 tokens
Playground
No timeline dragging, no keyframing by hand. An agent wrote project.json in a real session while the browser reloaded in real time. What you see is the actual output.
If you cut video but have never let software do the cutting, here is the whole idea in three steps. No coding required to follow along.
Ask in plain language: cut this to the beat, drop in a title, grade it cinematic. An agent is simply software that reads your request and acts on it.
Your whole edit lives in one text file, project.json: clips, tracks, effects, keyframes, transitions. The agent edits that instead of clicking around.
The open editor reloads in about 150 milliseconds. The timeline updates in front of you. Nudge anything by hand, then export when it feels right.
Most AI video tools hide the edit behind a black-box API. FableCut does the opposite: the timeline is a plain document, and anything that can write it can edit video. A human and an agent can work the same timeline at once.
{
"fps": 30, "width": 1080, "height": 1920,
"clips": [
{
"kind": "video", "track": "V1",
"start": 0, "in": 2.5, "duration": 3.4,
"props": { "filterPreset": "teal-orange" },
"keyframes": {
"scale": [{ "t": 0, "v": 1 },
{ "t": 3.4, "v": 1.18 }]
}
}
]
}Creators, reviewers, registries and commenters. Every card below is someone else’s words, not the maintainer’s. Click any card to read the source.
YouTubeShort
“AI edits videos while you sleep. FableCut review.”
AI Flash
YouTubeShort
“FableCut: the AI video editor where the AI actually edits.”
Evgenii Arsentev
YouTubeShort
“AI’s editing video? Meet FableCut!”
AI Override
X X3.3K views“FableCut isn’t trying to be another AI video editor. It’s trying to become a video editor that AI agents can fully control.”
QCXINT
X X1.7K views“Open a video editor in the browser, where the entire timeline is a JSON file, letting AI agents like Claude edit it for you directly via MCP or REST.”
Geek Lite
X X583 views“タイムライン全体がJSONなので、AIから一括編集できる。編集結果がブラウザへ即反映される。”
Yuuki Kon
X X237 views“Video kurguyu AI ajanına devret. Tarayıcında. FableCut, sıfır bağımlılıkla çalışan açık kaynak bir video editörü.”
Sedra
X XPublic post“محرر فيديو مفتوح المصدر اللي AI agents تسوقه عبر JSON. كل التايملاين project.json.”
weele.dev
in LinkedIn21 reactions“Across Daydream, FableCut, OpenCut, Palmier Pro, and Verlon, the same pattern is emerging. The human and the agent operate the same project.”
Olivier Legris
in LinkedInPublic post“FableCut is a browser video editor that AI agents can drive, and it has zero npm dependencies.”
Sriranga Tangella
TrendRanked #8 on the daily JavaScript trending list on 9 July 2026.
Trendshift
Kompozy Review3.8 / 5“The entire project, every clip and track and keyframe, is one project.json file, so anything that can write JSON can edit video.”
Moe Ameen · Kompozy
Kompozy PressComparison“A genuinely clever architecture: the whole timeline is one JSON file, so any agent that can write JSON can edit video.”
Kompozy
Agentic“An emerging pattern of browser-native agentic UIs enabling agents to drive creative and media workflows.”
Agentic Ready
Every“A zero-dependency browser-based non-linear video editor with a JSON timeline that AI agents can drive via MCP, REST, or direct file editing.”
EveryDev.ai
Link“Agents can work through MCP or REST instead of trying to click through a traditional nonlinear editor.”
LinkLoot
Self“A browser-based video editor designed around a JSON project file rather than a hidden internal state.”
SelfHostedWorld
Glama RegistryIndexed“A browser video editor that AI agents can drive.” Indexed under multimedia processing and agent orchestration.
Glama
AltTracked as a video editor in its own right, with 51 alternatives listed against it: Kdenlive, Shotcut, Avidemux.
AlternativeTo
Node 18+ and a Chromium browser. ffmpeg on PATH is optional but recommended for fast export.
git clone https://github.com/ronak-create/FableCut.git
cd FableCut
node server.jsOpens at http://localhost:7777.
claude mcp add -s user fablecut -- \
node "/path/to/FableCut/mcp-server.js"Registers the MCP server for every Claude Code session. Full setup in the README.
The MCP server speaks plain stdio and asks for nothing vendor-specific, so any client that supports MCP can drive the timeline. Point these at your own checkout.
claude mcp add -s user fablecut -- \
node "/path/to/FableCut/mcp-server.js"codex mcp add fablecut -- \
node "/path/to/FableCut/mcp-server.js"gemini mcp add -s user fablecut \
node "/path/to/FableCut/mcp-server.js"amp mcp add fablecut -- \
node "/path/to/FableCut/mcp-server.js"// ~/.cursor/mcp.json
{
"mcpServers": {
"fablecut": {
"command": "node",
"args": ["/path/to/FableCut/mcp-server.js"]
}
}
}// opencode.json
{
"mcp": {
"fablecut": {
"type": "local",
"command": ["node", "/path/to/FableCut/mcp-server.js"],
"enabled": true
}
}
}Yes, and you get to watch it happen. Your whole edit lives in one file called project.json: the clips, the tracks, the effects, every keyframe. An agent rewrites that file the same way it writes code, and the open editor picks up the change in about 150 milliseconds. Nothing is hidden behind a render API you cannot see into.
MCP is the Model Context Protocol, the standard way an AI client talks to outside tools. FableCut ships an MCP server, so Claude Code, Claude Desktop or any other MCP client gets real typed tools for reading and rewriting your timeline instead of guessing at it.
Only if you want the fast export. Put ffmpeg on your PATH and exports run through it. Skip it and the editor records the timeline in the browser instead. Everything else, preview and trimming and effects and titles, works fine without it.
No. The server runs on your own machine and listens on 127.0.0.1 only, so your media sits in a local folder and never goes near anyone's cloud. Two things do touch the network, and both are your call: the + URL button downloads a file you paste in, and AI background removal fetches its model from a CDN the first time you use it.
Yes. MIT licensed, free for personal and commercial work, with no account, no telemetry and no paid tier waiting for you later. It also has zero npm dependencies, so node server.js really is the whole install.
Node 18 or newer and a Chromium browser. Clone the repo, run node server.js, open http://localhost:7777. It works on Windows, macOS and Linux, and if you would rather not deal with paths at all, it installs as a Claude Code plugin.
Fetching the newest version from GitHub.