AI Chatbot

Proactive chatbot that captures leads after hours — automatically

Running onaibrosai.com
BuiltMarch 2026
StackClaude Haiku · Python · Vercel
<2s
response time
$5/mo
to run
24/7
online
0
leads missed after hours

The problem

Small businesses lose leads after 6 PM. A visitor with a real question finds the contact form, doesn't fill it out, leaves. Every after-hours visitor who doesn't convert is a lead the team never even knew existed — no name, no number, no way to follow up.

A contact form alone doesn't work. It asks for effort before giving any value. Most visitors don't fill it out. They need to feel the conversation is already happening before they commit to starting it.

What we built

A proactive chatbot with a deliberate 3-step opening sequence — designed to intercept visitors before they decide to leave, not after.

27s
Chat button starts pulsing

Subtle ring animation draws the eye without being aggressive. Visitor is still reading.

30s
Teaser bubble appears

"Quick question 👋 — does your business lose leads after hours?" One line, low commitment, easy to dismiss.

37s
Chat auto-opens (if not yet interacted)

Full chat opens with a proactive opener and 4 quick-reply buttons. One tap to start — no typing required.

Lead capture flow: captures name → phone → best time to call in 3 conversational messages

Instant email notification: full transcript sent to teamai@aibrosai.com the moment a lead is captured

Guardrails baked in: never quotes pricing, never names competitors, max 2–3 sentences per reply, one question at a time

Fallback-first: if the API fails, the widget still shows and directs to email — never a broken experience

Tech stack

Claude Haiku 4.5 Python (urllib — no SDK) Vercel Serverless ~80 lines backend Vanilla JS frontend

Result

Live and capturing leads on aibrosai.com. Average response time under 2 seconds. Monthly API cost under $5.

The chatbot pattern is portable — replace the system prompt with your business context, update the lead-capture questions, and the same codebase works on any site. A real estate agency, a dental practice, a law firm — same 80 lines of Python, different prompt.

For businesses that deal with after-hours visitors, this handles 5–10 hours of customer messaging per week that owners previously did manually the next morning — often too late to convert.

Get Started

Want this on your site?

Start with the $500 AI Workflow Audit — we map the 3 highest-ROI places AI fits in your business, and a chatbot is almost always one of them.

Book the $500 Audit →