Creativity · Agent Protocol
Bolt.new: In-Browser Full-Stack Coding Agent
Bolt.new, launched by StackBlitz in late 2024, pairs a chat-driven agent with a full Node.js runtime running inside the browser via WebContainers. The agent writes code, installs npm packages, runs dev servers, and previews your app without ever touching a cloud VM — then deploys with one click to Netlify. It's one of the fastest 'idea to live URL' flows on the market.
Protocol facts
- Sponsor
- StackBlitz
- Status
- stable
- Spec
- https://bolt.new/
- Interop with
- Claude, Netlify, WebContainers, Supabase
Frequently asked questions
What makes Bolt.new different from v0 or Lovable?
Bolt runs the whole Node.js stack inside the browser (WebContainers), so the agent can install any npm package, run migrations, or spin up a backend. v0 emphasizes React/Next UI generation; Lovable emphasizes Supabase-backed product builds.
Which model powers Bolt?
Primarily Anthropic Claude (Sonnet-family) with custom agent scaffolding from StackBlitz. Bolt exposes token usage prominently so users can budget their sessions.
How does deployment work?
Bolt integrates one-click deploy to Netlify, and supports export-to-GitHub for long-term ownership. The WebContainer project can also be opened in desktop IDEs.
Sources
- Bolt.new by StackBlitz — accessed 2026-04-20
- StackBlitz — WebContainers — accessed 2026-04-20