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Simulation agents that run while you sleep.

Simulation agents test complete user flows against a running product with its browser, APIs, services, and seeded data.

Spin up a full stack, point agents at real user flows, and get pass/fail reports without keeping a local session open.

Build your first autonomous agent →Learn more
agent computer
cpu2 vCPU · 4 GB
disk10 GB SSD
staterunning
a real computer · wired to everything an agent needs
start withand more
onIslo cloudyour cloudyour customers' cloud
task

Checkout + onboarding on main

✓boot stack
✓run checkout flow
▸run onboarding flow
○export pass/fail report
agent
browser.goto("https://app.local/checkout")
$GITHUB_TOKENplaceholder only
islo gateway
Bearer $GITHUB_TOKEN→Bearer ••••••••4f2a
injected at egress · per-request audit
api.github.com
200 OK
key never touched sandbox memory
allowpreview stackapp.localprivate
denyproduction APIsno prod keysblocked
sim-agent · 4 services
postgres:5432
seeded
api:8000
live
web:3000
under test
browser
clicking flows
sim-agent
$ islo use sim-agent
✓ sim-agent resumed

Pay only while it runs.

this use case2h simulation suite · 2 vCPU / 4 GB → ≈ $0.62

Pay only while the computer runs: CPU + memory + disk. No seat licenses, no idle fees.

CPU time
$0.07/CPU-hour
per core while the env runs
Memory
$0.04/GB-hour
per GB you provision
Storage
$0.0007/GB-hour
per GB of disk
$50 free credits on signup · no card required

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Common questions

What can a simulation agent test?

They run end-to-end flows such as checkout, onboarding, and regression suites against a live stack with browser, API, and database services.

Does a simulation agent need my whole stack running?

Yes. Islo restores the repo, database, API, web app, browser, and supporting services on one computer so the agent tests the product as a connected system.

Can I run simulation agents every night or from CI?

Yes. Keep the computer running between jobs or trigger runs from your CI, scheduler, or SDK.

Can a simulation agent test login, email, and seeded-data flows?

Yes. Run the services the flow depends on inside the development environment and give the agent scoped access to test accounts, inboxes, and seeded data.

How do I know whether the simulated user flow passed?

The agent returns pass/fail results and evidence from the browser and running services, so you can inspect what happened without replaying the flow locally.

Put autonomous agents to work.

Build your first autonomous agent →how it works
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