Most businesses lose leads because nobody replies to WhatsApp messages at 2am.
The WhatsApp Cloud API integration — webhook setup, message routing, and delivery receipt handling.
Gemini Flash as the response brain — why Flash specifically over GPT for this use case (latency and cost at scale).
Per-user conversation memory — how each user gets a persistent context window that carries their entire history without storing it in plain text.
The typing delay simulation — why it exists and how it prevents the response from feeling robotic. Calculated based on response length.
WhatsApp Cloud API
Direct integration with Meta endpoints for high-throughput messaging.
Gemini Flash Brain
High-speed edge inference optimizing conversational latency.
Persistent Memory
Encrypted context buffers enabling 6-month continuous dialogue threads.
Typing Simulation
Algorithmic delays mapping character response payload to realistic typing cadence.
WhatsApp Cloud API setup, webhook architecture.
Gemini Flash integration, prompt engineering.
Per-user memory system using Firebase.
Typing delay simulation, response quality tuning.
Client deployment and monitoring.
Multi-business rollout via ZwightX.
Response rate went from 23%
to 91% after deployment. No additional headcount.