Ship with AI.
Know when it breaks.
Drop one script tag on any site you ship. Harvv watches real visitors and tells you what broke, in plain English, before your customer does.
<!-- Drop into the <head> of any page --> <script async src="https://harvv.com/px/YOUR_KEY/pixel.js"></script>
The preview looked perfect. The customer says it's broken.
You ship sites with AI. So do agencies. Real users don't run the same browsers, the same networks, or the same devices as your preview. The bugs they hit are the silent ones, the kind that drain conversion before anyone files a ticket. Harvv watches every visit and tells you what broke, who it affected, and how to fix it. In plain English.
The bug. The blame. The fix.
Every Harvv case follows the same shape: what real users hit, why it matters, and the exact change that fixes it. Six examples below, pulled verbatim from live customer sites.
"2,556 visitors hovered on your 'Tops' nav link. Mouse paused for over 800ms. Not one clicked. The label looks decorative, not actionable. Restyle it as a button or move it into a hero CTA."
"1,842 visitors landed on your homepage, stayed 24 seconds, and never scrolled. Pricing, testimonials, CTA, all invisible. Move the primary CTA above the fold, or cut what's currently up there in half."
"Mobile engagement dropped 41% after Tuesday's deploy. Desktop unchanged. Specifically, Safari iOS hit a viewport breakpoint that broke the hero. Roll back the @media query at 390px, or test that breakpoint."
"Your buttons feel sluggish on mobile. INP p75 is 412ms, twice Google's threshold. The culprit is chunk-5492.js, which fails 12 times in 7 days. Lazy-load it on user interaction or remove it."
"8,753 people came back to your site and spent 34% less time on the return visit. Something on the second visit isn't delivering. Add a 'welcome back' header that shows what's new since they were last here."
"Your top nav links got 84,696 views and zero clicks across 17 instances. Visitors don't recognize them as links. Style them like buttons, add an underline on hover, or replace the whole class with a primary CTA."
The people running these sites use Harvv every day.
Quotes pulled from active customer threads. We can intro you to any of them.
Harvv flagged a checkout dead-click on Tiger Friday I never would have spotted in our preview environment. Cost us about 8% of conversions for two weeks before we knew. Caught it the day it shipped now.
The white-label client emails alone justify the price. We send a quote, the client sees our brand, replies come to our inbox. Five minutes from case to billable work, every time.
I built our store with Lovable in a weekend. Harvv was the only monitoring I added. Caught a Safari iOS hero bug at 4am. Pasted the prompt back into Lovable. Fix shipped before I had coffee.
One script tag. That's the integration.
No npm package, no SDK to learn, no analyst on staff. The pixel is the whole onboarding. After that, you read summaries.
Install in one line
Drop the script tag into the head of every page. Or paste a one-line prompt into your AI builder and it will do it for you.
Real users do their thing
The pixel captures 18 behavioral signals per visit. Dead clicks, rage clicks, scroll, hover, vitals, layout breaks, errors. Zero personal data.
Read summaries, not dashboards
Harvv detects what's broken, ranks by sessions affected, and writes the case in plain English. Three plausible root causes per case, ready to act on.
Fix or hand off
Each case ships with a copy-paste prompt for your AI builder. Or send a branded quote to your client. Or let Harvv fix it. Your call.
Whether you build sites for yourself or for clients, Harvv fits.
Same install, same dashboard. The difference is who you're shipping for.
One paste fixes the bug. Not five.
You know the drill. Bolt creates a bug fixing the last bug. Lovable burns 200K tokens chasing a chunk error. Harvv writes the prompt for you, with the actual evidence, tailored to your AI builder. Paste it. It's done.
Preview shows zero of the bugs that actually matter.
The Lovable preview ran on a fresh Chrome on a 2024 MacBook on fiber. Your customer is on a 2020 Pixel on hotel WiFi. They hit a checkout that loops. You don't find out unless they email you. Harvv tells you within hours.
Lovable, Bolt, Replit ship zero observability by default.
No analytics. No error tracking. No way to know your buy button is dead. Harvv is the one script tag that gives you all three, plus a 'why' for each. No SDK. No npm install. No instrumentation. No dashboard archaeology.
One Studio. Thirty client sites. Zero dashboard sprawl.
Drop the pixel on every site. The Studio shows health, vitals, dead clicks, conversions, and open cases for every client in one grid. Filter by status. Click a card. Drill into the case. Send a quote. Move to the next.
Every email goes out in your name. Replies come to you.
Click 'Email this case'. The composer pre-fills the issue, the impact, your quote amount, your reply-to. Sends from your agency domain, branded with your agency name. The client gets a clean email. They never see Harvv on it.
Junior drafts. Manager approves. Then it goes.
Set send authority on per-staff basis. Junior account managers can draft quotes but can't email clients directly. Drafts route to a manager for approval. Built in. No spreadsheet workaround.
Free until it pays for itself.
One site free, no card. Pay per site as you grow. No event-volume bills, no per-seat fees, no surprise overages.
- Auto issue detection with plain-English summaries
- AI builder prompts tailored to Lovable / Cursor / Bolt / v0 / Claude
- Studio dashboard with status pipeline and replay
- 12KB pixel, zero PII, GDPR friendly
- Everything in Free, plus 3 sites and 10x event headroom
- Pixel coverage canary alerts when the script falls off a page
- AI chat with cohort scoping: ask about visitors who matched specific filters
- Speed sub-dashboard with per-page LCP, INP, CLS drilldown
- Email support, 24h reply
- Everything in Pro, scaled to your portfolio
- White-label client emails sent from your domain
- Quote builder with one-click approval link
- Send-authority workflow: junior drafts, manager approves
- Team roles & permissions, per-staff site access
- Priority support, 4h reply, dedicated Slack
What people ask before installing.
Is this another session replay tool?
No. Replay tools record video and ask you to watch it. Harvv computes behavior server-side, detects what is broken, and writes the case for you. You read summaries, not playbacks.
Will it slow my site down?
12KB on the wire, async loaded after first paint. Harvv typically adds under 5ms to load and zero blocking time on the main thread.
What about privacy?
Zero personal data. The pixel scrubs textareas, password fields, contenteditable regions, anything inside a data-harvv-private container. No URL query strings with names or emails. GDPR friendly by design.
How long until I see something useful?
First events arrive within seconds. Detected issues start landing within a few hours of real traffic. The dashboard hydrates progressively, so you see signal early.
Does this work with my AI builder?
Yes. Lovable, Cursor, Bolt, v0, Replit, Webflow, Shopify, Framer, plain HTML, Next.js, anything that lets you add a script tag to the head. Each case ships with a paste-ready prompt for the platform you chose.
What if I'm an agency with 30 client sites?
Drop the pixel on each one. The Studio shows every site in one place, and each case can be quoted to the right client with your branding, your reply-to, your domain. $49 flat per site per month.
Get your pixel, drop it in your head tag, see your first finding by lunch.
Free for one site. No card on signup. The first issue you find usually pays for the next year.