Coasts

Founded 2025

Run isolated parallel development environments and services for AI coding agents locally

Pricing model

Free

Rating

★ People love it

Time to value

Quick Setup (< 1 hour)

You can use Coasts to run multiple isolated development environments in parallel on your local machine. When AI agents work across different git worktrees, they often run into database migration issues and port collisions. Coasts solves this by assigning each worktree its own runtime with separate network ports and services defined via Docker Compose. You can execute tests inside each isolated environment, inspect dynamic port mappings, and even offload heavy workloads to remote servers over SSH without altering your local development setup.

What Coasts does

Install the Coasts daemon via terminalDefine multi-service environments using a CoastfileSpawn isolated runtimes for specific git worktreesInspect dynamic port assignments across running containersExecute test commands inside specific isolated environmentsAdd remote hardware nodes over SSH to distribute runtimesHot-swap application code without rebuilding entire containersSpawns isolated parallel runtimes for multiple git worktreesAssigns unique dynamic ports to prevent local port collisionsIntegrates with existing Docker Compose configuration filesOperates fully offline on your local machine without mandatory cloud dependenciesAllows remote runtime execution over SSH to offload machine resourcesIncludes ready-made prompts for Cursor and Claude Code configurationExecutes commands and test suites directly inside isolated runtimes