ClipKit

The video infra for agents. ClipKit turns a JSON timeline — the open ClipKit Protocol — into rendered video on the GPU. Describe a video as structured data; get an MP4. Built for AI agents and the developers shipping them.

clipkit.dev · Docs · Protocol · Agent quickstarts

https://github.com/user-attachments/assets/ff4b7e9b-2e0a-40f4-a6a1-042e981fc65f

<p align="center">_{<b>↑ Made with ClipKit.</b> Every frame of this promo was rendered from a ClipKit Protocol document — no editor, no timeline UI, just structured data. <a href="https://api.clipkit.dev/storage/v1/object/public/remote-assets/clipkit-promo.mp4">▶ Play</a> if it doesn't load inline.}</p>

Quick start

npm install -g @clipkit/cli

clipkit new my-video.json                 # scaffold a Source
clipkit render my-video.json -o out.mp4   # render locally (headless Chrome)

…or from code:

import { render } from '@clipkit/renderer';
import { writeFile } from 'node:fs/promises';

const { buffer } = await render({ source });   // source = a ClipKit Protocol document
await writeFile('out.mp4', buffer);

Local rendering uses your installed Google Chrome (for WebCodecs). For GPU-accelerated and pro-format (ProRes / AV1 / transparent) output, render on the hosted service with clipkit render --cloud.

What's here

A monorepo; each package publishes to npm under the @clipkit scope.

Package	What it is
@clipkit/protocol	the ClipKit Protocol — schema, types, validation
@clipkit/runtime	the engine — WebGPU/WebGL2 compositor + WebCodecs encoder
@clipkit/renderer	render a Source to MP4 locally (headless Chrome)
@clipkit/editor	a configurable, embeddable editor over the schema
@clipkit/editor-core	the editor's UI-free data layer
@clipkit/playback	browser playback engine
@clipkit/patterns	composable motion-graphics units
@clipkit/sfx	procedural sound-effects synthesis
@clipkit/music-analysis	beat / tempo analysis for authoring
@clipkit/speech-to-text	transcription → captions
@clipkit/lint	protocol-aware validation + plain-language summaries
@clipkit/mcp-server	an MCP server so agents can author + render video
@clipkit/cli	the local-first CLI

For AI agents

ClipKit ships an MCP server — point your agent at it and it can build, validate, preview, and render ClipKit videos:

npx -y @clipkit/cli mcp        # stdio MCP server

See the agent quickstarts for Claude, Cursor, and more.

License

Apache-2.0 — except @clipkit/runtime, which is under the Business Source License 1.1 and converts to Apache-2.0 four years after each release. In plain terms: use it, embed it, build your own product on it, and render for your own customers — all free. The one thing you can't do is offer a competing hosted ClipKit-rendering service. See LICENSING.md and TRADEMARK.md.