SYS.04 · AI Agents

WhatsApp CRM Gateway

Self-hosted WhatsApp gateway pushing CRM events and extracting inbound CVs.

Private system

production sessions

5,000

messages per nightly sweep

5 min

watchdog interval

notification cost

The numbers

production sessions

5,000

messages per nightly sweep

5 min

watchdog interval

notification cost

The event pipeline starts in the database: row changes call pg_net.http_post into a Supabase edge function, which posts to the gateway REST API and fans out by event type — closed deals to CEO, sales manager and finance; quotations to sales manager and finance; KPI alerts to regional leads.
A production watchdog that solves a failure mode the vendor healthcheck misses entirely: sessions report ready while their Chromium page is hung. The cron probes with a real Puppeteer call on a 45s timeout, then restarts the session and clears Chromium singleton locks.
The nightly CV sweep exploits WhatsApp Web’s lazy history back-sync, holding the watchdog off during the Puppeteer-heavy window and relying on extractor dedup so the model is only billed for genuinely new CVs.
Honest provenance: the custom layer is the CRM integration, four patched engine files and a production ops kit on top of an MIT-licensed upstream gateway.