Custom AI Agent Platform
for Your Business
Build custom AI agents that integrate with your existing tools. 1-click deploy to WhatsApp, SMS and more.
Not a Chatbot. An AI Agent.
Most tools call themselves AI agents. Most are chatbots with a new label. A real AI agent built on a frontier model like Claude understands context, takes action, builds its own integrations with your tools and finishes the task. That is the difference between a form your customer fills out and an assistant that does the work. A chatbot can tell a customer how to cancel a booking. An agent cancels the booking, updates your calendar, refunds the card and sends the confirmation, all while the customer is still on WhatsApp.
Customer service, appointment booking, lead qualification, back office automation, coding, data analysis. One agent, trained on your workflows, reading and writing to your actual systems. Deploy to WhatsApp or SMS with 1 click. Start for $20/month, scale up as you grow.
Small and medium businesses benefit disproportionately from agents compared to larger companies. A solo founder, a small team of five, a family-owned business: every hour spent on repetitive work is an hour not spent growing. An agent that handles the repetitive layer is the equivalent of hiring a new employee, except it starts today, works 24/7, never forgets and scales with you. That is why our customer base is mostly small businesses and professionals rather than enterprise.
What an AI Agent Can Do for Your Business
Customer Service 24/7
Your AI agent handles customer questions on WhatsApp and SMS around the clock. It understands context, resolves issues and escalates when needed.
Back Office Automation
Automate repetitive tasks: data entry, report generation, inventory management, invoicing. Your agent integrates with your existing systems.
Sales & Lead Qualification
Capture and qualify leads via WhatsApp or SMS. Your AI agent follows up automatically, answers product questions and books meetings.
Personal Assistant
Manage your calendar, draft emails, take notes, set reminders. Your agent doubles as a chief of staff through the channels you already use.
Your Agent as a Chief of Staff
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 through WhatsApp or SMS, the channels you already check constantly, so you do not have to open another dashboard to get work done.
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 agent and it does the context-switching. Founders and solo operators use it for inbox triage and meeting prep. Sales teams use it for lead qualification and proposal drafting. Operations teams use it for vendor follow-ups and recurring reports. The minutes saved per interaction are small; the hours saved per week are not.
Connects to Your Existing Tools
An AI agent is only as useful as the systems it can read and write to. Modassembly agents integrate with your existing stack through APIs, webhooks, database access and the Model Context Protocol (MCP). CRM, calendar, e-commerce, payments, helpdesk, internal databases, custom internal services. The agent does not replace your tools, it operates them on your behalf.
Common integrations include Google Calendar, Gmail, Outlook, Slack, HubSpot, Salesforce, Pipedrive, Notion, Shopify, Stripe, WhatsApp Business, Twilio and custom internal systems. On the Starter plan, the agent builds integrations as it needs them through conversation. On the Custom plan, our team architects the integration layer end to end, including authentication, permissioning and auditability, and exposes your internal systems as MCP servers so the agent can use them like first-class tools.
The point is seamless integration with the workflows you already run. No rip-and-replace, no parallel system to maintain, no two-stage rollout. Your agent shows up inside the systems your team already uses and starts moving work forward inside them.
Multi-Agent Orchestration
One agent is the start. Business ships an AI Admin coordinating 2 specialized AI Staff agents (customer service, dispatcher, back office, business developer, data analyst and more). Custom adds unlimited Staff and bespoke orchestration. Each agent has its own role, its own tools and its own memory, and they share context when they need to. Together they behave as a small virtual team specialized for your business.
In practice this means a customer message can land in the customer service agent, get triaged into a refund request, get handed to an operations agent that calls Stripe and updates your order system, then get summarized back to the customer in a single thread. None of those steps require a human, and the customer sees one continuous conversation.
Built on Claude, the Frontier Model for Agentic Work
Modassembly builds on Claude because Claude is currently the strongest model for agentic work. Anthropic's models lead on tool use, long-horizon planning and code generation, which is exactly what real agents need to do reliably in production. Claude reasons through ambiguity, follows long instructions without getting lost, calls tools correctly and maintains a tone that does not embarrass you in front of customers.
We handle the production engineering on top: Anthropic API integration, Model Context Protocol (MCP) servers, tool orchestration, memory, monitoring, deployment and on-call. You get the frontier model wired into your business, without the months of integration work it would otherwise take. Bring your own Anthropic API key (BYOK) if you want, or use ours at Anthropic's rates. Either way, the agents we build are yours and portable.
AI Agent Use Cases by Industry
An AI agent takes the shape of the business it serves. Here are the shapes we see most often across the small and medium businesses we work with.
Food and wholesale distribution
Quote generation against inventory, order taking on WhatsApp, price list updates, cross-referencing supplier lists with stock levels, delivery scheduling. One of our customers replaced a 2-to-3 day quoting workflow with a 2-hour one using an agent that reads their inventory and supplier catalog directly.
Hospitality and experiences
Booking and reservations, pre-arrival communication, upsells and add-ons, post-stay follow-up, review solicitation. Agents triage weekend and evening inquiries when the owner is off the clock, turning late-night interest into confirmed bookings instead of missed opportunities.
Professional services and consulting
Client intake, proposal drafting from templates, time tracking and status updates, document requests and retrieval, routing urgent vs routine asks. Turns WhatsApp or email into a functional client portal without anyone installing software.
E-commerce and direct-to-consumer
Order tracking, returns and exchanges, product recommendations, cart recovery, post-purchase follow-up, review and UGC solicitation. The agent plugs into your commerce platform, so it sees live inventory and order status instead of guessing.
Clinics, wellness and personal services
Appointment scheduling and changes, intake forms, reminders and follow-ups, insurance and pricing questions, no-show reduction. Front-desk staff stop spending the day on phone calls and can focus on clients who are physically in front of them.
B2B and SaaS
Outbound qualification, demo booking, product-question support with links to docs, churn-risk outreach, expansion-opportunity triage. WhatsApp outperforms email for outbound in LATAM and many EU markets, and your agent works every hour your prospects are awake.
Modassembly vs the Alternatives
If you want a custom AI agent, you have five main paths. Here is how Modassembly compares to each.
Traditional chatbots and flow builders
Decision trees, drag-and-drop flows, canned responses. Fine for very narrow use cases, brittle everywhere else. AI agents handle ambiguity, variation and multi-step conversations without you having to script every branch. And when you need to change behavior, you describe the change in plain language instead of rewiring a flowchart.
No-code automation platforms
Zapier, Make and similar tools are great at chaining predefined triggers and actions. They break down when the workflow needs judgment, language understanding or a decision based on context. AI agents take over the part that no-code cannot do: interpret a messy incoming request, decide what to do, then execute.
Generic AI products
ChatGPT and similar general-purpose AI tools are powerful but generic. They do not know your business, your customers, your systems or your rules, and they cannot take action on your behalf. Modassembly agents are shaped around your specific business and wired to your specific tools, so they actually move work forward instead of just chatting about it.
Build directly on the Anthropic API
Maximum flexibility and maximum engineering work. You own prompts, tool orchestration, memory, session management, messaging integration, carrier compliance, deployment, monitoring and on-call. Modassembly gives you the same flexibility with all of those concerns handled, so you focus on the business logic instead of the plumbing.
Multi-model agent frameworks
Framework libraries like LangChain or generic agent SDKs are flexible building blocks, not a deployed product. You still need to build the agent, integrate the tools, host it, monitor it and maintain it. Modassembly delivers the finished agent end to end, on top of best-in-class infrastructure.
Consulting firms or in-house build
Bespoke work, bespoke price tag. Works for enterprise, often overkill for small and medium business. Modassembly is a specialist shop built specifically for SMB: we bring the architecture and best practices from larger-scale deployments without the enterprise invoice.
Human virtual assistants (VAs)
Great for relationship-heavy work, expensive for scale work, and always constrained by working hours. An AI agent runs 24/7, costs a flat monthly fee plus usage, and learns your systems once and applies that forever. Most teams end up running both: a VA for the relationship work and an agent for the scale work, with the two coordinating through a shared inbox.
“We cross-reference food supply lists with our inventory to build cost-benefit analyses for clients. This task used to take me 2-3 days. With AI, I can do it in 2 hours.”
Start for $20/month
Get your own AI agent with 1-click deployment to WhatsApp or SMS. The agent builds its own integrations as you go. When you need deeper customization, multi-agent orchestration or more channels, our team takes it from there. 14-day free trial with $20 in API credits.
We have built AI agents for food distribution, hospitality, professional services, e-commerce, clinics and B2B SaaS. Whatever your business, if you have repetitive work that eats hours every week, an agent can usually handle it. Book a call and we will scope it together, or start the free trial and see what your agent can do in a day.
AI Agent for Business: Frequently Asked Questions
An AI agent for business is a custom-built AI that handles real tasks for your company: customer service, appointment booking, lead qualification, back office work, data analysis and more. Modassembly builds AI agents powered by Claude and deploys them to WhatsApp, SMS, your website and other channels with 1 click. Unlike a chatbot, an agent can read and write to your systems, make decisions and complete multi-step work on your behalf.
A chatbot follows scripts. Input matches a rule, output returns a canned response. An AI agent powered by Claude understands context, makes decisions and takes action. It reads from your CRM, writes to your calendar, updates records in your database, calls your APIs, runs multi-step workflows, and remembers context across a conversation. Chatbots explain how to do something. Agents do it.
Starter is $30/month with $20 in API credits at face value (no markup), or $20/month BYOK, and includes 1 AI Admin agent with 1-click deployment to WhatsApp or SMS. Business starts at $75/month with $50 in API credits, or $50/month BYOK ($125/$225 with $100/$200 in credits also available), and adds 2 AI Staff agents (examples: customer service, dispatcher, back office, business developer, data analyst and more), multi-agent orchestration and deployment to website, Slack, email and Telegram. Custom is done-for-you (let's-talk pricing) for bespoke architecture or specialized requirements. With BYOK you connect your own Anthropic account; with credits you pay Anthropic at face value. Every plan includes a 14-day free trial with $20 in API credits.
Absolutely. Modassembly is built specifically for small businesses and professionals who want AI agents without the complexity of building and hosting them yourself. Start for $20/month, deploy to WhatsApp or SMS with 1 click and let the agent build its own integrations. No engineering team, no servers to manage, no infrastructure to maintain. Plenty of our customers are one- or two-person operations running agents that handle the work of an additional employee.
An AI agent can handle customer service 24/7, manage and book appointments, qualify leads, automate back office tasks like data entry and report generation, analyze data and surface insights, write code to extend its own capabilities, build internal tools, orchestrate other agents and more. Each agent is custom-built for your specific workflows. You tell it what you need, it learns your systems, it does the work.
Starter plan deployments go live the same day. You sign up, our AI onboarding agent sets up your account and walks you through configuring your agent and connecting your first tools, then deploys it to WhatsApp or SMS with 1 click. Custom plans involving deeper integration, multi-agent architectures or legacy systems typically take one to four weeks with our engineering team, depending on scope.
No. Modassembly handles the engineering. You bring the business knowledge. Our AI onboarding agent helps you set up, and the agent itself can build its own integrations as you go. If you can describe what you want in plain language, the agent can usually handle the rest. For Custom plans, our team does the technical work end to end.
Agents connect to your tools through APIs, webhooks and database access. Common integrations include Google Calendar, Gmail, Slack, HubSpot, Salesforce, Shopify, Stripe, WhatsApp Business, Twilio and custom internal systems. On Starter plans, the agent builds integrations as it needs them. On Custom plans, our team architects the integration layer around your stack and handles authentication, permissions and data access.
Yes. The Business plan ships an AI Admin coordinating 2 specialized AI Staff agents, and Custom adds unlimited Staff and bespoke orchestration. Agents can pass work between each other, share a common memory and operate as a small virtual team specialized for your business.
Yes. Modassembly does not sell, share or train on your business or customer data. Agents run in a managed environment with scoped access to your systems, so they only read and write what they are authorized to touch. For Custom plans we can further scope data access, redact sensitive fields and align with compliance frameworks like GDPR. You can also bring your own Anthropic account (BYOK) to keep API traffic under your own Anthropic contract.
Yes. BYOK is supported on all plans. You connect your Anthropic account and we handle everything else. Alternatively, you can use Modassembly's Anthropic account and pay at Anthropic's rates, which is simpler if you are just getting started. Either way, the agents we build are yours and portable.
Model Context Protocol is an open standard from Anthropic for connecting AI assistants to tools, data sources and systems. Modassembly builds on MCP, so your agent can use standard MCP servers and tools out of the box, and we can expose your internal systems as MCP servers for the agent to use. This keeps your setup interoperable with the wider Claude ecosystem.
Yes. Your agent responds in dozens of languages, including English, Spanish, Portuguese, French and more. It detects the language automatically and replies in kind. This is particularly useful for solo operators and small teams serving international or bilingual customer bases out of a single agent.