Coasts
DefunctYC F25Founded 2025 · 2 employees · 1 known investors
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2,322 people in our graph share verified history with the Coasts team — schools, employers, funds. One of them is your warm intro.
Ken Chenaultunlockedknows Jamie Sunderland · together at Airbnb (overlapped)
×6knows the team · via Y Combinator
×4knows the team · via Airbnb
knows the team · via Bard College
Coasts is a local-first, open source tool that enables parallel development environments by spawning isolated runtimes for AI coding agents working with git worktrees. It integrates with any agentic coding solution and supports hybrid local-remote runtime setups.
Also known as JSX Tool
Founders & leadership· Y Combinator alumni (F25)
Coasts was founded in 2025 by Jamie Sunderland and Dan Hyman.
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Jamie SunderlandinFounder/CEOJamie Sunderland previously founded Cheqout, a QR-based ordering platform that reached 250+ restaurants during the pandemic, and worked as a product engineer at Y Combinator building infrastructure before joining the program again as a founder. Prior to that, he was a developer on Airbnb's risk operations team.
Investors · 1
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Frequently asked questions
- What does Coasts do?
- Coasts is a local-first, open source tool that enables parallel development environments by spawning isolated runtimes for AI coding agents working with git worktrees. It integrates with any agentic coding solution and supports hybrid local-remote runtime setups.
- Who founded Coasts?
- Coasts was founded by Jamie Sunderland, Dan Hyman in 2025.
- Who are Coasts's investors?
- Coasts's investors include Y Combinator.