← The Lab/N° 003 · AUTOMATION·Shipped 2026-05

WhatsApp Dedup Guard

A drop-in middleware that stops Green-API webhook duplicates from triple-replying.

Green API's webhook retries can fire 3× for the same message — your bot then triple-responds. This guard fingerprints messages, debounces in Firestore, and returns the cached reply on retries.

Next in the lab →

Game Factory

Ships a playable browser game from a 2-line prompt.

Build log

Get an email when I ship a new prototype or essay. No funnel — just the work.