--- title: "D Raju (@chatnory) | Hashnode" description: "Founder of ChatNory, an AI chatbot for websites and WhatsApp. Read the latest articles by D Raju on Hashnode." url: "https://hashnode.com/@chatnory" --- @chatnory # D Raju @chatnory · Kolkata, India · Joined November 2026 Founder of ChatNory, an AI chatbot for websites and WhatsApp [Website](https://chatnory.com/) ### [One bot, four channels: what actually differs between web chat, WhatsApp, Messenger and Telegram](https://chatnory.hashnode.dev/one-bot-four-channels-what-actually-differs-between-web-chat-whatsapp-messenger-and-telegram?utm_source=hashnode&utm_medium=feed) "Put the same bot on WhatsApp and Telegram too" sounds like a configuration change. It is not a hard project either — but the parts that differ are not the parts people expect. The messaging APIs are 8 min read · [chatnory.hashnode.dev](https://chatnory.hashnode.dev/one-bot-four-channels-what-actually-differs-between-web-chat-whatsapp-messenger-and-telegram?utm_source=hashnode&utm_medium=feed) [8h ago](https://hashnode.com/posts/one-bot-four-channels-what-actually-differs-between-web-chat-whatsapp-messenger-and-telegram/6af5a5fe7306cfc255c3aed6) ### [Multi-tenant from day one: keeping one customer's chatbot data out of another's](https://chatnory.hashnode.dev/multi-tenant-from-day-one-keeping-one-customer-s-chatbot-data-out-of-another-s?utm_source=hashnode&utm_medium=feed) The first version of almost every B2B tool is single-tenant by accident. You build it for one customer, it works, a second customer arrives, and you add a customer\_id column. That column is now the on 7 min read · [chatnory.hashnode.dev](https://chatnory.hashnode.dev/multi-tenant-from-day-one-keeping-one-customer-s-chatbot-data-out-of-another-s?utm_source=hashnode&utm_medium=feed) [8h ago](https://hashnode.com/posts/multi-tenant-from-day-one-keeping-one-customer-s-chatbot-data-out-of-another-s/6af5a564c791bfa372c12e9b) ### [What an AI support chatbot actually costs per conversation](https://chatnory.hashnode.dev/what-an-ai-support-chatbot-actually-costs-per-conversation?utm_source=hashnode&utm_medium=feed) "How much will this cost to run?" is the question I get before any technical one, and the honest first answer is annoying: less than you fear, in a shape you did not expect. People budget for the inde 8 min read · [chatnory.hashnode.dev](https://chatnory.hashnode.dev/what-an-ai-support-chatbot-actually-costs-per-conversation?utm_source=hashnode&utm_medium=feed) [8h ago](https://hashnode.com/posts/what-an-ai-support-chatbot-actually-costs-per-conversation/6af5a4c77a3382e1b023bc58) ### [Six guardrails that stopped our support chatbot inventing answers](https://chatnory.hashnode.dev/six-guardrails-that-stopped-our-support-chatbot-inventing-answers?utm_source=hashnode&utm_medium=feed) A support chatbot that makes things up is worse than no chatbot. A missing answer costs you one email. A confidently wrong answer about a refund policy costs you an argument, and the customer has a sc 6 min read · [chatnory.hashnode.dev](https://chatnory.hashnode.dev/six-guardrails-that-stopped-our-support-chatbot-inventing-answers?utm_source=hashnode&utm_medium=feed) [15h ago](https://hashnode.com/posts/six-guardrails-that-stopped-our-support-chatbot-inventing-answers/6af54b0cdf0c60a661bde55e) ### [Putting an AI chatbot on WhatsApp: the five parts of the Cloud API that cost me a week](https://chatnory.hashnode.dev/putting-an-ai-chatbot-on-whatsapp-the-five-parts-of-the-cloud-api-that-cost-me-a-week?utm_source=hashnode&utm_medium=feed) The hard part of putting a chatbot on WhatsApp is not the chatbot. It is WhatsApp. The messaging itself is a plain HTTPS POST and you will have it working in twenty minutes. Then you spend a week disc 7 min read · [chatnory.hashnode.dev](https://chatnory.hashnode.dev/putting-an-ai-chatbot-on-whatsapp-the-five-parts-of-the-cloud-api-that-cost-me-a-week?utm_source=hashnode&utm_medium=feed) [15h ago](https://hashnode.com/posts/putting-an-ai-chatbot-on-whatsapp-the-five-parts-of-the-cloud-api-that-cost-me-a-week/6af54a51295a95992014d12e)