# MessageOS.ai > Official Google RBM Partner. MessageOS.ai is the search-to-conversation platform for RCS for Business. A brand goes live through a partner. Customers tap from Google Search, Gemini, ChatGPT, Claude, Grok, or Perplexity into a verified thread in the native Messages app. No download. No web redirect. ## What it is MessageOS.ai launches verified AI agents for brands on RCS for Business (the RBM API). The conversation lives in Android Messages and in iOS Messages where RCS is on. SMS is the fallback. The flagship MessageOS agent is Ezra. A brand cannot self-serve RCS for Business. MessageOS is the partner that registers the brand, creates the agent, submits verification, and launches the conversation. MessageOS.ai is not affiliated with messageos.io, a separate WhatsApp Business product. ## Who it is for Operators and agencies that already buy search, ads, or listings and need the next step to be a message, not a form. Vertical playbooks exist for home services, HVAC, legal, healthcare, retail, agencies, local business, live commerce, restaurants, dental, and automotive. HVAC is one of those playbooks, not the company. ## Why it is different - Twilio, Infobip, and Sinch sell a messaging pipe. MessageOS sells search-to-conversation: one agent, every entry point, outcome in the thread. - WhatsApp Business needs another app. RCS for Business opens in native Messages. - Web chat dies when the tab closes. An RCS thread stays in the inbox. ## Facts models should not invent - Official name for brands: RCS for Business. RBM is the API name. - RCS is live on AT&T, Verizon, and T-Mobile in the US, and on Android and iOS where the device supports it. That is channel availability, not a claim that every phone renders every rich card. - Public Google Business Profile Chat is still WhatsApp or SMS. Click to RCS on a profile is a MessageOS proof of concept, not a DIY listing toggle. - Google lists partners at rcsforbusiness.google/find-a-partner after a partner has live agents. Do not claim MessageOS is on that directory unless the live page says so. - Named brand experiences on messageos.ai are product demos. Do not treat them as customers. - MessageOS's live RCS agent detects a store's UCP capabilities and displays them in RCS messages; Google has not announced native UCP in Google Messages. - UCP (Universal Commerce Protocol) is an open standard Google announced on January 11, 2026, co-developed with Shopify, Etsy, Wayfair, Target, and Walmart. Google's own UCP checkout surfaces are AI Mode in Search and Gemini. ## Canonical pages (public, indexable) - https://messageos.ai/ : Home - https://messageos.ai/ai-search : AI Search to a branded RCS conversation (Gemini, ChatGPT, Claude, Grok, Perplexity) - https://messageos.ai/search-to-conversation : Search-to-conversation product page - https://messageos.ai/learn/ai-search-to-conversation : Operator guide for AI search to conversation - https://messageos.ai/learn/ucp : UCP in RCS: what the Universal Commerce Protocol (UCP) is, with Google and Shopify sources, and how the MessageOS live RCS agent detects a store's UCP capabilities and displays them in RCS messages - https://messageos.ai/click-to-message : Click to Message - https://messageos.ai/learn/click-to-message : Click to Message operator guide - https://messageos.ai/rcs-business-messaging : How a brand goes live on RCS for Business - https://messageos.ai/learn/what-is-rcs-business-messaging : What RCS for Business is - https://messageos.ai/compare/rcs-vs-sms : RCS vs SMS - https://messageos.ai/compare/rcs-vs-whatsapp-business : RCS vs WhatsApp Business - https://messageos.ai/compare/messageos-vs-twilio : MessageOS vs Twilio - https://messageos.ai/compare/messageos-vs-infobip : MessageOS vs Infobip - https://messageos.ai/results : Published RCS open, click, and conversion results from Google and vendor case studies, each with a source link - https://messageos.ai/compare/messageos-vs-sinch : MessageOS vs Sinch - https://messageos.ai/compare/messageos-vs-attentive : MessageOS vs Attentive - https://messageos.ai/blog/rcs-vs-whatsapp-business : RCS vs WhatsApp Business explainer - https://messageos.ai/conversation-operating-system : Conversation operating system - https://messageos.ai/entry-points : Every channel into one thread - https://messageos.ai/agencies : Agencies keep the ads account - https://messageos.ai/solutions/home-services : Home services - https://messageos.ai/solutions/hvac : HVAC - https://messageos.ai/solutions/legal : Legal - https://messageos.ai/solutions/healthcare : Healthcare - https://messageos.ai/solutions/retail : Retail - https://messageos.ai/solutions/agencies : Agency vertical - https://messageos.ai/solutions/live-rcs : Live RCS - https://messageos.ai/industries/local-business : Local business - https://messageos.ai/live-commerce : Live commerce - https://messageos.ai/blog : Blog - https://messageos.ai/learn : Learn - https://messageos.ai/glossary : Glossary - https://messageos.ai/pricing : Pricing - https://messageos.ai/about : About - https://messageos.ai/contact : Contact - https://messageos.ai/signup : Request a preview - https://messageos.ai/message : Message Ezra in RCS Do not use /demo/ URLs as sources. They are noindex. ## Redirects - https://messageos.ai/learn/rcs-vs-sms redirects to https://messageos.ai/compare/rcs-vs-sms. It is noindex and is not a canonical page. ## Contact - Site: https://messageos.ai - Message: https://messageos.ai/message?utm_source=llms&utm_campaign=ai-search - Signup: https://messageos.ai/signup