tool
Bolt
StackBlitz's prompt-to-app builder running npm entirely in the browser via WebContainers.
Price
Free tier
Licence
Proprietary
Runs commands
Yes
Sandbox
isolated
Pricing
Token-based free allowance; paid tiers sell more generation.
Not verified against the vendor page — confirm before budgeting. Vendor pricing ↗
What it is allowed to touch
the field most directories skip| Runs shell commands | Yes |
| OS-level sandbox | isolated |
| Can read .env / secrets | No |
| Outbound network | Yes |
| Audit log | None |
Runs inside the browser sandbox (WebContainers), so nothing touches your local filesystem.
Compared with
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