Every agent deserves
its own machine.
Coasts are containerized cloud environments built for AI agents. Full isolation. Nothing shared. Every run starts clean.
Worktrees weren't built for this.
AI agents need more than a branch. They need their own filesystem, their own processes, their own network. Worktrees share the host environment — one agent installs a dependency, another breaks. Nothing is reproducible. Nothing is isolated.
Coasts solve this. Each agent gets a full containerized environment — its own machine — that starts clean and runs independently. No conflicts. No side effects. Just work.
Built for agents, from the ground up.
Full isolation
Every agent runs in its own container with its own filesystem, processes, and network. No shared state, no surprises.
Reproducible environments
Environments are defined as code and start clean every time. Yesterday's run and today's run behave the same way.
Agent-native design
Purpose-built for how agents actually work — long-running tasks, tool use, filesystem access, and programmatic control.
Open source
Coasts is open source. Inspect the code, self-host it, extend it. No vendor lock-in, no black boxes.
Three steps. That's it.
Define
Specify your environment — base image, dependencies, tools. Everything your agent needs, declared up front.
Launch
Spin up an isolated coast in seconds. Each one is a fresh container with its own filesystem and runtime.
Run
Point your agent at its coast and let it work. Full shell access, file I/O, network — all sandboxed.
Open source. Open roadmap.
Coasts is built in the open. Check out the code, open an issue, or submit a pull request. We're building this together.