aid: coasts
name: Coasts
description: >-
  Coasts (Containerized Hosts) is an open-source, MIT-licensed CLI tool that provides
  localhost service isolation and orchestration for git worktrees. It spawns multiple
  fully isolated development runtimes for the same project on a single machine, giving
  each worktree its own ports, databases, and services so parallel AI coding agents
  (Claude Code, Cursor, Codex, Conductor, and others) can build and test side by side
  without clashing. Built on Docker Compose, with a thin CLI client talking to a local
  coastd daemon over a unix socket plus a bundled React/Vite web observability UI, Coasts
  is local-first and offline-capable, with optional extension to remote machines over SSH.
  Backed by Y Combinator (Fall 2025) and founded by Jamie Sunderland and Dan Hyman.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://coasts.dev/coasts-og.png
url: https://raw.githubusercontent.com/api-evangelist/coasts/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Developer Tools
- CLI
- Git
- Containers
- Docker
- Local Development
- AI Agents
- Developer Productivity
- Open Source
- DevOps
apis: []
common:
- type: DomainSecurity
  url: security/coasts-domain-security.yml
- type: Website
  url: https://coasts.dev
- type: DeveloperPortal
  url: https://coasts.dev/docs
- type: Documentation
  url: https://coasts.dev/docs
- type: GettingStarted
  url: https://coasts.dev/docs/getting-started
- type: Blog
  url: https://coasts.dev/blog
- type: Support
  url: https://coasts.dev/contact
- type: Community
  name: Discord
  url: https://discord.gg/Nj87zwt7Kc
- type: GitHubOrganization
  url: https://github.com/coast-guard
- type: SourceCode
  url: https://github.com/coast-guard/coasts
- type: License
  name: MIT
  url: https://github.com/coast-guard/coasts/blob/main/LICENSE
- type: CLI
  url: cli/coasts-cli.yml
- type: ChangeLog
  url: changelog/coasts-changelog.yml
- type: Releases
  url: https://github.com/coast-guard/coasts/releases
- type: Packages
  url: packages/coasts-packages.yml
- type: LLMsTxt
  url: llms/coasts-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence