Cardboard is an agentic video editor built for growth and marketing teams. The browser-based platform turns raw footage into polished videos through AI assistance, with capabilities such as automated first cuts and semantic footage search. It aims to replace lengthy manual editing workflows with faster, AI-powered alternatives so non-specialist teams can produce video. Cardboard is a Y Combinator Winter 2026 company based in San Francisco.
Cardboard
ActiveAgentic video editor
Total raised
$500K
1 round
Stage
Seed
Jan 2026
Team
1-10
since 2026
Pricing
—
Founded
2026
San Francisco, United States
Agent-ready
—
Browser-based agentic video editor with no desktop install required
Automated generation of first cuts from raw footage
Semantic footage search to find clips by meaning rather than filenames
AI assistance that turns raw footage into polished videos
Designed for growth and marketing teams rather than specialist editors
Speeds up editing workflows that are traditionally manual and time-consuming
Workflow oriented toward producing marketing video at scale
12/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Jan 2026 Seed $500K ● Y Combinator
Capital network
$500K raised ·1 backer·10 network links
- Backers1
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
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- What is Cardboard?
- Cardboard is a browser-based agentic video editor that turns raw footage into polished videos using AI, aimed at growth and marketing teams.
- What is semantic footage search?
- It lets you find clips based on their content and meaning rather than only by filename or manual tagging.
- Do I need to install software?
- No, Cardboard runs in the browser.
- Who is Cardboard built for?
- Growth and marketing teams that want to produce video without lengthy manual editing or specialist editors.
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