Never Demo an
Empty Product Again.
We analyze your site and goals, then generate AI-powered browser agents with unique personalities, backstories, and realistic behavior. They actually use your product like real users would.
How Warmstart Works
Not simulations. Real browser agents that actually click, scroll, and interact with your product.
1. We Analyze Your Site
Tell us your URL and goals. Our AI crawls your product to understand the user journey, features, and ideal persona types.
2. Generate Believable Personas
We create unique users with AI-generated avatars, backstories, behavior patterns, and personalities that match your target audience.
3. Real Browser Agents
Not mocked data. Actual Playwright-powered browser sessions that sign up, browse, comment, and create content on your site.
Real User Personas That Match Your Product
Each persona has a unique avatar, backstory, behavior pattern, and personality. They act like your actual users would.
Early adopter, tech enthusiast. Uses every feature daily and creates lots of content.
Reliable user who logs in daily. Reads content, reacts, and occasionally comments.
Drops by a few times a week. Browses, likes content, but rarely posts.
Watches from the sidelines. High page views, low engagement. Still a real user.
Why Startups Love Warmstart
Make your product feel alive from day one.
Show a Thriving Site
New users see activity, not emptiness. Social proof that encourages them to engage.
Impress Investors
Show what your product will look like at scale. No having to manually build fake test accounts.
Demo Features Easily
Show off notifications, feeds, and social features with actively engaged personas.
Test Your Analytics
Verify your tracking works. See if our avatar activity matches your stats dashboards.
Session Recordings
Watch what each persona sees. Screenshots and videos of every session for QA.
See Different Perspectives
Power users vs lurkers. See what each persona type experiences on your product.
Control the Room Tone
Set the vibe. Our personas adapt their language and behavior to match.
"The Q4 deliverables are on track. Shall we schedule a sync to discuss the roadmap?"
"This feature is fire! Just shipped my first project. Who else is building cool stuff?"
"omg this is exactly what I needed!! anyone else obsessed with this app rn??"
Perfect For
Whether you are launching, fundraising, or testing, Warmstart has you covered.
Startups About to Launch
Avoid the "empty room" problem. Launch with activity already happening so early users feel like they are joining something alive.
- ✓ Pre-populated content
- ✓ Active user presence
- ✓ Social proof from day one
Teams Testing New Features
See how different user types interact with your new feature before shipping to real users.
- ✓ Test with varied personas
- ✓ Session recordings
- ✓ QA edge cases
Investor Demos
Show investors what your product looks like at scale. Real browser activity, real engagement.
- ✓ Populated dashboards
- ✓ Active notifications
- ✓ Growth metrics
Your Data Stays Clean
Synthetic activity is clearly labeled and tracked. It never pollutes your real analytics or triggers unwanted notifications.
Labeled Synthetic Flag
Every persona has a label_synthetic: true flag. Filter them out in queries.
Sandboxed Sessions
Browsers run in isolated environments. No cross-contamination with production data.
Email-Safe Personas
Synthetic users use special email domains that do not trigger your transactional emails.
Activity Tracking Dashboard
See exactly what each persona did. Session recordings, step-by-step screenshots, full audit trail.
{
"id": "usr_abc123",
"name": "Alex Rivera",
"email": "alex@warmstart.demo",
"behavior_type": "power_user",
"label_synthetic": true,
"created_by": "warmstart",
"sessions": 47,
"last_active": "2025-01-15T09:30:00Z"
}All synthetic activity is clearly marked for easy filtering in your analytics.
Real Browser Agents. Not Mock Data.
Every persona runs in an actual Playwright-powered browser session. They click buttons, fill forms, scroll pages, and create real content on your site.
Join 200+ founders using Warmstart for demos and staging.
Ready to Fill Your Demo Room?
Get started in minutes. We will analyze your site, generate personas, and have activity flowing within the hour.