Isolated sandboxes
Each machine is its own environment, scoped to your workspace.
LeanMachine
Secure sandboxes for agents that build.
LeanMachine gives each agent a computer of its own. Start an isolated sandbox for a build, a test run or a data job, work in it, and let it disappear when the job is done. You pay only while it runs.
01
Isolated by default
Every machine runs in its own sandbox, in a namespace only your workspace can reach.
02
Ephemeral by design
Idle machines clean themselves up. Keep one around only when you mean to.
03
Metered by the minute
Billing stops the moment a machine stops. No reserved capacity, no idle fleet.
Capabilities
What your agents can do with LeanMachine.
Full lifecycle control
Create, start, stop and dispose of machines through one simple API.
Automatic clean-up
Session machines dispose of themselves after an idle period, so nothing is left running.
Persistent when you need it
Mark a machine permanent to keep a long-lived environment for an agent.
Capacity that finds itself
New machines land on the least-loaded pool automatically.
Spend guardrails
Machines stop automatically when credits run out, and every minute is on the record.
How your agent uses it
A sandbox is one call away.
Reserve a key, create a machine and connect to it. When the job is done, stop or dispose of it, or let idle clean-up do it for you.
API reference# Reserve a key with POST /machine/instance-key, then start the machine curl -X POST /api/v1/machine/instances \ -H "Authorization: Bearer $LEANTOOLS_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "key": "<instance key>", "instanceType": "Session", "tag": "ci-run-42" }'
Use cases
Where teams put LeanMachine to work.
Run the test suite
Coding agents clone, build and test in a clean environment, every time.
Crunch the data
Process files and run scripts without touching your own infrastructure.
Reproduce the bug
Spin up a throwaway environment, reproduce the issue, then let it go.
How do agents work inside a machine?
Every machine comes with its own network address. Your agent or tooling connects to it directly to run commands and move files.
What happens to idle machines?
Session machines are disposed of after they have been idle for a while (an hour by default). Permanent machines stay until you dispose of them.
How is LeanMachine billed?
Per active minute, from start until the machine stops or is disposed of. Stopped machines cost nothing.
What if we run out of credits?
Running machines are stopped automatically, so there is never a surprise bill.
Better together
Pairs well with LeanMachine.
LeanBrowser
Managed headless browsers your agents can drive to capture, extract and automate the web.
LeanTracker
AI-native issue tracking: testers capture rich reports, and coding agents pick them up and fix them.
LeanMemory
A memory that learns from use: structured, unstructured and event data in one place, with recall that gets more accurate the more your agents work.
Start building with LeanMachine.
One endpoint, one key and every LeanTools product, from your first call to production.