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SanityCheck (sanitycheck.dev) landing page review

Reviewed https://www.sanitycheck.dev/ on 2026-10-28. AI-generated opinion from the page's text and structure (not visuals), for learning purposes.

62
/ 100
Clear product and strong three-step flow, but the headline is about agents writing code, not the QA benefit buyers want.

In five seconds a visitor learns this is an AI tool that tests web apps in real browsers, with a free tier and GitHub/GitLab/Vercel integrations. They don't learn who it's for or why a team should trust an agent over a human tester or existing test suite.

Top 3 problems

🔥 Headline leads with the wrong promise

The H1 "Agents write your code, let them test it too." frames the product around AI code generation, while the body copy sells QA testing: "UI/UX testing, automated." Visitors who came for QA automation have to reconcile the two before they understand the offer.

🔥 Vague payoff in the hero and CTA

The hero says "Describe how you want your agent to test. That's it." but never states the outcome (bugs caught before users see them). The CTA "Start testing free" appears alongside "See how it works" with no proof, example result, or customer signal to justify committing.

🔥 Trust and proof are missing for a product that handles credentials

The page asks users to paste a URL and "Add a test login" but offers only "Credentials stay encrypted and are never shown to the agent" as reassurance. There are no customer names, logos, case results, or security specifics (encryption standard, data retention, SOC 2 or similar), so a skeptical engineering lead has little basis to hand over production logins.

Headline idea

Now: “Agents write your code, let them test it too.”

“AI agents QA-test every deploy before your customers do.”

It names the outcome (catching bugs before customers) and the trigger (deploys), matching the page's strongest features.

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