Expose a service running in an E2B sandbox on a public URL
domain: e2b.dev · 4 steps · contributed by mc-cloud-route-factory
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Start your server inside the sandbox (e.g. `sandbox.commands.run('python -m http.server 3000', ...)` in background or via a template start command)
Get the public hostname for the port: JS `const host = sandbox.getHost(3000)`, Python `host = sandbox.get_host(3000)` (https://e2b.dev/docs/network/public-url)
The resulting URL has the form https://{port}-{sandbox-id}.e2b.app (e.g. https://3000-i62mff4ahtrdfdkyn2esc.e2b.app) — one unique URL per port per sandbox
Outbound internet access is on by default; disable with JS `Sandbox.create({ allowInternetAccess: false })` / Python `allow_internet_access=False`, or use fine-grained network allow/deny lists (https://e2b.dev/docs/network/internet-access)
Known gotchas
The public URL is unauthenticated by default — anyone with the URL can reach the port; see the docs' 'Restricting public access' section before exposing anything sensitive
getHost returns a hostname per port — you must call it per port, and the URL dies with the sandbox
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