ZainJaafil

An AI rep that calls small businesses and hands them to a human

Alex calls a restaurant owner about their payment terminal, works out whether they are worth a rep's time, and then does the part most voice bots skip: it asks permission, puts the caller on hold with music, dials a real salesperson, whispers a summary of the conversation into their ear, and bridges the two of them together.

It replaced a stack built on Vapi, which took the per minute platform fee to zero. It runs on the client's own EC2 box under systemd rather than a third party voice platform, so nothing about it depends on a vendor staying cheap.

The model itself remembers nothing between calls. Every session starts blank. What looks like memory is a one paragraph summary the model writes about itself at the end of each call, stored in SQLite and fed back in at the start of the next one. That was deliberate. Feeding whole transcripts back would bloat every call, and keeping it in my own database means resetting someone's history is one line of SQL instead of a support ticket.

• Twilio
• OpenAI Realtime
• Pipecat
• FastAPI
• SQLite
• nginx
• EC2

A tray app that listens to sales calls and feeds the rep their next line

Call Assist sits in a rep's system tray and captures two audio streams at once: their microphone, and the customer's voice coming back through system audio. Both go out for live transcription. The moment it hears the word contract, or too expensive, it pops the matching rebuttal card on screen. It tracks what the customer complains about across the call and assembles a closing script as it goes.

The best thing I did on it was notice a mistake I had already made. The transcription API key was hardcoded in the app, which meant it was going to ship inside every copy installed on every rep's laptop, extractable by anyone who looked. I moved the entire audio connection server side so the key never leaves the server, and put auth on both endpoints so nobody could run up the client's bill.

• Electron
• Node
• WebSockets
• Deepgram
• Web Audio
• pm2

A dashboard nobody asked me to build

I was hired to work the front desk, call leads off Meta ads, and help with marketing. Two hundred calls in, I noticed the gym had TVs on the wall showing nothing. So I built a live floor display: check ins, streaks, goal progress, the class schedule, member shoutouts. Then I pitched it to the owner.

He is buying more TVs to put it on.