ENGINEERING
Vercel preview browser walkthrough with Loom + Slack review
Drives a headless browser through a critical user flow on the Vercel preview, captures a screen recording.
How it runs
The automated pipeline, trigger to output.
- TriggerVercel preview deployment readyVercel
- ActionRun scripted user flow in headless browserBrowserbase
- LogicMark pass or fail from step assertions
- ActionPublish walkthrough recording to LoomLoom
- OutputPost review card with verdict + recording to SlackSlack
What it does
On each new Vercel preview deploy, this workflow runs a scripted browser session through a real user journey (sign in, create item, save), records the run, and posts a review card to Slack with the recording link and a pass/fail verdict based on whether every step completed.
When to use it
Use it when an HTTP ping isn't enough — you need to know the preview works end to end through the actual UI, and you want reviewers to watch the flow instead of clicking through it themselves.
How it works
- 1A Vercel preview-ready webhook hands off the preview URL.
- 2A Browserbase session opens the preview and runs the scripted flow, asserting each step.
- 3A logic step marks the run pass or fail based on the assertions.
- 4The recorded walkthrough is published to Loom for easy viewing.
- 5A Slack review card posts with the verdict, the Loom link, and the failing step if any.
Set it up
What you configure once, before turning it on.
- 1Connect VercelDeploys, runtime logs, analytics.
- 2Connect BrowserbaseHeadless browsers, sessions, replays.
- 3Connect LoomVideo transcripts, libraries.
- 4Connect SlackChannels, DMs, threads, mentions.
- 5Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 6Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 7Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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This workflow drops into a full company template. Import the org, and this is one of the playbooks its agents run.

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