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Know what a change did before it ships.

Connect a preview URL to important journeys. Molar checks the changed application in a browser and leaves evidence for review before merge.

Get started Read the docs
Preview checkIllustrative workflow
Update checkout confirmationPull request #48
- status: pending
+ status: confirmed
+ receipt: attached
commit 8e4c · 3 files changed
deploy
Preview environmentpreview.acme.test

Signup and verificationPassed

Invite a teammatePassed

Payment confirmationFailed

3 journeys checked Trace attached to the failed check

Check the change

Run selected journeys against the environment created for a pull request.

See the failure

Open trace, screenshots, and status that explain where the preview diverged.

Gate with context

Use configured checks as part of review when repository support is set up.

A preview test in practice

A pull request changes checkout. The run opens the preview, buys a test plan, verifies the callback, and reports the order state.

  • Preview URL
  • Critical path scenarios
  • Result attached to review
Go to documentation
Preview checkIllustrative workflow
Update checkout confirmationPull request #48
- status: pending
+ status: confirmed
+ receipt: attached
commit 8e4c · 3 files changed
deploy
Preview environmentpreview.acme.test

Signup and verificationPassed

Invite a teammatePassed

Payment confirmationFailed

3 journeys checked Trace attached to the failed check

Start with a small suite

Choose the journeys where a regression matters most, then expand coverage as the team learns.

  • Signup and login
  • Checkout and payment
  • Invites and webhooks
Talk through your use case
Checkout journeyIllustrative workflow
checkout.acme.test
PaymentAcme Pro plan4242 4242 4242 424208 / 28 · Test card
Signed callbackPayment webhookPOST /webhooks/payment signature verified
Order #1042ConfirmedReceipt → test inbox

A few things
you might be wondering.

Have a specific workflow in mind?
Let’s talk it through

Does Molar test every pull request automatically?

Guard runs configured checks when repository connection and policy are set up.

Can previews use Clones?

Supported workflows can pair a preview with configured service clones.

What happens when a check fails?

The run records a failed or blocked outcome with available evidence.

Test a preview deployment.

Choose a concrete workflow. We’ll help you get the right setup for your application.

Get started Talk to the team