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Sylphx

Sylphx SandboxesPreview

Isolated machines for agents: microVMs, browsers, and desktops. E2B-compatible.

Part of Sylphx: the same account, the same key, and the same bill as every other service. In the same league as E2B.

Start with Sylphx SandboxesRead the docs

What Sylphx Sandboxes does

  • A machine per lease

    A microVM with exec, files, and processes, granted at once or refused with a reason, and wiped when released.

  • Browsers and desktops

    Chrome over CDP and computer-use desktops, with a live viewer and human takeover that holds the agent off until it ends.

  • Bounded and compatible

    Egress policies, time and cost budgets, volumes, and snapshots. E2B SDK clients work unchanged.

  • Every grant, end, and control change is an ordered event, delivered as a signed webhook.

Quickstart

Your first call

Install the SDK, set SYLPHX_API_KEY to a key from the console, and call the API. The CLI speaks the same API.

index.ts
import { Sylphx } from '@sylphx/sdk'

// Reads SYLPHX_API_KEY: one key for every Sylphx service.
const sylphx = new Sylphx()
const me = await sylphx.access.whoami({})

for await (const item of sylphx.sandboxes.leases.listAll({ parent: me.env! })) {
  console.log(item.name)
}
Install
npm install @sylphx/sdk
CLI
sylphx sandboxes leases list

Pricing

Pay for what you use

Start free. Pro is $20 a month and includes $20 of usage across every service; usage past it bills at the prices below, up to your spend cap.

Free includes

No included quantity.

Pro includes

No included quantity; billed from the Pro usage credit.

Then

vCPU time (Linux)
$0.0000125 / vCPU-second
Memory (Linux)
$0.000004 / GiB-second
Lease time (Linux)
Free
Snapshots (Linux)
Free
Volumes (Linux)
$0.15 / GB-month
Egress (Linux)
$0.05 / GB
Live viewer (Linux)
Free

Every service’s prices