TL;DR: Coasts is a Y Combinator Fall 2025 startup Localhost service isolation and orchestration for git worktrees, currently active with a team of 2.
Localhost service isolation and orchestration for git worktrees
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A Coast (containerized host) is a local development runtime. Coasts let you run multiple isolated environments for the same project on one machine. As AI coding agents increasingly work in parallel across git worktrees, developers hit painful conflicts — clashing ports, duplicated databases, and fragile per-branch setup. Coasts solve this by giving each worktree its own fully isolated runtime, so multiple agents can build and test side by side without stepping on each other.
Yes. Coasts was funded by Y Combinator in the Fall 2025 batch. Localhost service isolation and orchestration for git worktrees
A Coast (containerized host) is a local development runtime. Coasts let you run multiple isolated environments for the same project on one machine. As AI coding agents increasingly work in parallel across git worktrees, developers hit painful conflicts — clashing ports, duplicated databases, and fragile per-branch set…
Coasts was part of Y Combinator's Fall 2025 batch.
Coasts has a team of 2 people according to Y Combinator's directory.
Coasts is currently listed as Active with a team of 2 in Y Combinator's directory.
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