Alfred
Alfred makes real phone calls for you. It books appointments and moves reservations, checks your Google Calendar mid-call, handles interruptions, and updates your calendar when it's done. Response latency stays under 1.2 seconds.
Role
Built alone, from the voice pipeline and agent workflow to the Google Calendar integration and web interface.
Challenge
The hard part was getting latency under 1.2 seconds while keeping responses natural and handling interruptions reliably.
Outcome
A working voice agent that handles real calls from start to finish. It books appointments, reschedules reservations, and keeps your calendar up to date on its own.
Technologies used:
Next.js
Node.js
Hetzner Cloud
Claude
OpenAI
Shadcn UI
VAPI
Langfuse