Originally published on AIdeazz — cross-posted here with canonical link. Everyone's building "AI agents" now. Most are glorified chatbots with API calls. Here's what an actual agent looks like when you're running dozens in production, serving thousands of users daily across Telegram and WhatsApp. The Production Definition: Observe → Decide → Act → Persist An AI agent is software that maintains state across interactions while autonomously executing multi-step workflows. Not "chat + function calling." Not "GPT wrapper with memory." The core loop: Observe : Ingest data from multiple sources (webhooks, APIs, user messages, scheduled triggers) Decide : Route to appropriate models based on task complexity and cost constraints Act : Execute workflows spanning multiple systems and services Persist : Maintain context and state across sessions, users, and time My WhatsApp invoice processor doesn't just extract data—it maintains conversation state across days, remembers user preferences, autonomously retries failed OCR…