Your AI Admin on WhatsApp, SMS, Slack, Teams or Telegram. Manages your calendar, drafts emails, schedules meetings, follows up. Custom Claude agents built side-by-side with expert AI engineers.
Most business owners do not need another app, they need an assistant. Someone who handles the calendar, drafts the follow-up email, reminds you about the proposal due Thursday and books the meeting without three back-and-forths. Modassembly gives you that assistant as an AI Admin through WhatsApp, SMS, Slack, Teams or Telegram, the channels you already check constantly.
You message it the way you would message a human chief of staff. “Move my 3pm to Friday and tell Sarah why.” Done, and the email is drafted for your approval. Instead of context-switching between six tools to get one thing done, you text your AI Admin and it does the context-switching. The minutes saved per interaction are small; the hours saved per week are not.
Unlike a generic AI chat tool, your AI Admin is a real Claude agent. It reads your calendar, your inbox, your CRM and your task list live, and it writes back to them. It does not suggest what you should do, it does it (with the approval gates you configure).
Schedule, reschedule and cancel meetings. Find times that work, draft invites, send confirmations. Handles the back-and-forth so you don't.
Drafts replies, triages your inbox, surfaces what needs your attention. Sends directly when you authorize, or queues for approval.
Prepares briefings before meetings, takes notes during, sends follow-ups after. Reads your CRM and prior conversations so the prep is real, not generic.
Tracks your tasks, follows up on outstanding asks, pings vendors who went quiet, and surfaces deadlines before they sneak up on you.
Your AI Admin runs on the channels you already check constantly. WhatsApp for most small business owners. Slack or Teams if your team lives there. SMS, Telegram, email or your website if those fit better. You don't learn a new app, you just text your assistant.
Modassembly is an official WhatsApp Business Platform Tech Provider, so the WhatsApp deployment uses the official API and is reliable, secure and compliant with Meta policy. For US SMS, we handle A2P 10DLC carrier registration so your number stays out of spam filters.
Inbox triage, meeting prep, calendar management, drafting investor and customer updates, chasing follow-ups. The AI Admin keeps you out of email and inside the work that actually moves the business.
Lead qualification, proposal drafting, meeting scheduling with prospects, CRM updates after every call, follow-ups on quiet deals. Your AI Admin runs the admin side of selling so you spend more time selling.
Vendor follow-ups, recurring reports, calendar coordination across the team, document requests, incoming-request triage. Turns operations from reactive into proactive.
Client intake, scheduling, time tracking notes, draft proposals from templates, status updates to clients on ongoing work. Your AI Admin turns WhatsApp or email into a client portal.
Your AI Admin is a custom Claude agent built on the official Claude Agent SDK. That matters because the model has to reason through ambiguity, follow long instructions, call tools correctly and keep tone consistent. Claude leads the market on all four. Generic AI tools fall over on the long-context multi-step work an executive assistant actually does.
We add the production engineering on top: Anthropic API integration, Model Context Protocol (MCP) servers for Google Calendar, Gmail, Outlook, Slack, Notion and your other tools, channel deployment, monitoring and managed service. You get a deployed Claude agent in your business, not a research prototype.
“Modassembly has transformed the way I manage my time and my team's. Tasks that used to take me weeks, I now solve in minutes.”
Build your agents side-by-side with an expert AI engineer inside a WhatsApp, SMS, Telegram, Slack or Teams group. We architect, build and ship with you, not from a template.
Start your free trial14-day free trial with $20 in AI credits
An AI executive assistant is an autonomous Claude agent that does the work a human executive assistant or chief of staff would do: manages your calendar, drafts and triages emails, schedules meetings, takes notes, follows up on tasks, and keeps you organized. Unlike a chatbot, your AI assistant actually takes action in your tools (Google Calendar, Gmail, Outlook, Slack, Notion and more), not just suggestions.
A chatbot answers questions. An AI personal assistant takes action. You message it like you would a human assistant: "Move my 3pm to Friday and tell Sarah why." Done, and the email is drafted for your approval. It reads your inbox, writes back to your calendar, updates your CRM and remembers context across conversations. It works in the chat thread you already check constantly (WhatsApp, SMS, Slack, Teams, Telegram), not in another app you have to remember to open.
An AI virtual assistant can handle calendar and scheduling, draft and triage email, prepare meeting agendas and take notes, follow up on tasks and outstanding asks, manage your task list, qualify inbound leads, draft proposals from templates, run vendor follow-ups, generate recurring reports, and triage incoming requests to the right team member. Founders use it for inbox triage; sales teams use it for proposal drafting; ops teams use it for vendor and recurring-report work.
Your AI scheduling assistant reads your calendar (Google Calendar, Outlook, Cal.com or others) and schedules, reschedules and cancels meetings on your behalf. You can send it requests in plain language: "Find 30 minutes this week with Alex, prefer afternoons." It checks availability, drafts the invite, sends confirmations and handles the back-and-forth. For customer-facing scheduling, it can also book directly on your calendar from a WhatsApp or website conversation.
Yes. Your AI Admin runs on WhatsApp, SMS, email, Slack, Teams, Telegram or your website with 1-click deployment. WhatsApp and Slack are the most common because that is where small business owners already operate. Modassembly is an official WhatsApp Business Platform Tech Provider, so the WhatsApp deployment uses the official API.
It takes action. That is the difference between an AI executive assistant and a chat assistant. It writes to your calendar, sends email drafts for your approval (or sends directly if you authorize), updates your CRM, posts in Slack and pings you with reminders. For sensitive actions you can configure approval steps; for routine work it just does it.
You build it side-by-side with an expert AI engineer inside a WhatsApp, SMS, Telegram, Slack or Teams group. We architect your custom Claude agent with you live, write the integrations with your calendar, email and CRM, and ship it to the channels you use with 1-click deployment. Don't want to build it yourself? Our team designs, builds and deploys your AI Admin end to end.
Common integrations include Google Calendar, Gmail, Google Drive, Outlook, Microsoft 365, Slack, Teams, Notion, HubSpot, Salesforce, Pipedrive, Asana, ClickUp, Linear, Zoom and Cal.com. Built with an expert AI engineer in your group chat, the integrations get architected with you live. For Custom AI Fleet plans, our team handles the integration layer end to end.
Yes. Modassembly does not sell, share or train on your personal or business data. Your AI assistant runs in a managed environment with scoped access only to the tools you connect. You control what data is stored and for how long. For Custom AI Fleet plans we can further scope data access, redact sensitive fields and align with compliance frameworks like GDPR.
See the pricing section above for current plans. Vertical AI Employee starts at $35/month and includes 1 AI Admin plus 1 dedicated AI Employee, 1-click channel deployment and AI Engineer on-demand. AI Workforce adds 3 more AI Employees, agent-to-agent communication, more channels and priority AI Engineer access. Every plan includes a 14-day free trial.