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Cardboard

A fast, collaborative, and agentic video editor for your browser and Mac. Create, cut, and compose videos with AI.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-26T08:07:56.501Z. Cached copy · Source on cardboard.ai

# Cardboard

> A fast, collaborative, and agentic video editor for your browser and Mac. Create, cut, and compose videos with AI.

## About

Cardboard is an agentic video editor that runs in the browser and as a free Mac app for Apple Silicon. Backed by Y
Combinator, it pairs a traditional multi-layer timeline with natural-language commands, so raw footage becomes a
publish-ready edit in minutes. This file is regenerated on every release; the capabilities, plans, roles, and
releases below describe the version currently deployed.

## What Cardboard can do

### Drive the edit

- **Natural language editing**: Describe the edit ("cut the awkward pauses", "make this look more cinematic") and Cardboard performs the precise timeline operations.
- **Browser-native rendering**: A custom WebGL2 compositor and a WebCodecs decoder do the work locally. On the web there is no software to install.
- **Mac app**: Cardboard for Mac (Apple Silicon) is free to download with the Lite plan included, keeps your footage on your Mac, and lets you edit with your own Claude Code or Codex.
- **Multi-layer timeline**: Video, audio, image, text, and caption tracks with drag-and-drop editing and keyframes.
- **Live collaboration**: Review, comment on, tweak, and ship an edit together.

### Cut and assemble

- **Transcript-first cutting**: Remove bad takes, false starts, fillers, stutters, and repetitions from spoken footage while the meaning survives.
- **Silence and gap removal**: Detect dead air, cut it, and close the gaps it leaves behind.
- **Highlight extraction**: Surface the moments worth keeping from long recordings and cut them into a recap.
- **Beat-synced montages**: Compile highlight reels and travel or event montages with cuts landing on the music.
- **Multicam sync**: Align several camera angles of one session by their audio and cut between speakers.
- **Transitions**: Place visual transitions between clips and smooth the cut points.
- **Batch cleanup**: Apply one cleanup pass across every clip in the project with consistent settings.

### Find and source footage

- **Scene and speech search**: Find footage by describing what happened or what was said, not by filename.
- **Stock B-roll**: Drop stock B-roll on the exact moment each concept is spoken, sized to how long it stays the subject.
- **Archival documentary sourcing**: Cover a narrated documentary or origin story with real archival footage of the subject from public archives.

### Frame and finish

- **Motion graphics and titles**: Create animated titles, diagrams, charts, and callouts directly on the timeline.
- **Reframe and speaker tracking**: Recompose an edit for vertical or square, and punch in on whoever is speaking across split, grid, hero, and PIP layouts.
- **Framing repair**: Diagnose and remove black bars, letterboxing, and exposed canvas around a clip.
- **Colour grading and filters**: Cinematic looks, LUTs, and lift/gamma/gain colour wheels applied consistently across the timeline.
- **Backgr
…

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Claim my listing on Agent Web Map for cardboard.ai:
1. POST https://agentwebmap.com/v1/sites/cardboard.ai/claims and keep claim_id and claim_secret private.
2. Publish the verification line "AgentWebMap verification: <token>" (token from step 1) in https://cardboard.ai/llms.txt, or use the DNS, meta-tag or well-known method the response describes. This only verifies the listing; your website and domain remain yours.
3. POST https://agentwebmap.com/v1/sites/cardboard.ai/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/cardboard.ai).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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