Custom AI web apps, shipped fast.
We build full-stack AI applications on Next.js + Vercel + Supabase. Internal copilots, RAG search, agent dashboards, customer-facing AI assistants, AI-native SaaS products. Branded, fast, owned by you. Prototype in 5 days, MVP in 5 weeks.
What a custom AI web app looks like
AI web apps are not chatbots glued onto a website. They are full-stack products: branded UI, auth, multi-tenant data, real integrations, streaming responses, vector search over your private knowledge, agent orchestration with human-in-the-loop checkpoints, and observability so you know exactly what is happening in production.
We build them on Next.js + Vercel because that is the fastest path from idea to live URL. Code lives in your GitHub. Infrastructure runs in your accounts. You own everything.
What we build into every app
Branded Next.js front-ends
Custom Next.js 15 (App Router, Server Components) front-ends on Vercel with shadcn/ui, Tailwind, and a brand-tuned design system. Mobile-first, fast, accessible, hosted on Vercel Edge.
RAG + vector search
Retrieval-Augmented Generation pipelines on pgvector, Pinecone, or Weaviate. Index your private knowledge — SOPs, contracts, support tickets, product docs — and surface the right chunk with citations every time.
Agent dashboards + orchestration
Multi-agent systems with human-in-the-loop checkpoints, durable workflows on Trigger.dev, and operator dashboards so your team can watch agents work and intervene when needed.
Data + auth + billing
Supabase or Postgres for data, Clerk or Supabase Auth for users, Stripe for billing, Resend or Postmark for email. Multi-tenant, role-based access, audit logs included.
Real-time streaming
Streaming AI responses, live progress indicators, server-sent events, and WebSocket fallbacks. Apps that feel as fast as ChatGPT, no matter how complex the workflow.
Security + compliance
SOC 2-friendly architecture, encrypted at rest and in transit, fine-grained permissions, and audit trails. We have shipped HIPAA-aware, PCI-aware, and GDPR-aware AI apps.
Real apps we have shipped
Internal copilot for an agency ops team
Custom Next.js app where ops staff query the CRM, project board, and finance system in plain English. Claude reads everything, returns answers with source links. Replaced 6 internal dashboards.
RAG search for a 50-attorney law firm
Private case-file search with citations. Llama 3.3 running locally + pgvector on a Mac Mini. Attorneys ask questions in plain English, get cited answers from filings. Zero cloud egress.
Customer-facing AI assistant for a real estate brokerage
Branded Next.js app where buyers describe their dream home in chat; Claude returns curated MLS results, schedules showings, and notifies the agent. Embedded on the brokerage's site.
AI-powered intake portal for a med spa group
Multi-tenant Next.js app where new patients run an AI-driven intake (text + photo upload), Claude scores eligibility, drafts the chart note, and books a consult. Branded per location.
Agent dashboard for an outbound sales team
Real-time view of every cold-email and SMS agent: who is being contacted, what was sent, what was replied, what is pending human review. Reps approve hot replies in one click.
Internal financial reporting copilot
Claude wired to the data warehouse via MCP. Finance team asks "what was MRR last week vs. this week" and gets answers with the SQL it ran. CFO uses it daily.
The stack we build on
Framework
Next.js 15 App Router · React 19 Server Components · TypeScript · shadcn/ui · Tailwind
Hosting
Vercel · Vercel Functions · Edge Runtime · custom AWS or self-hosted
Data
Postgres · Supabase · pgvector · Pinecone · Weaviate · Vercel KV · Redis
AI Models
Claude Sonnet 4.6 · Claude Opus 4.7 · GPT-4o · Gemini · Llama 3.3 · Qwen 2.5
Auth + Billing
Clerk · Supabase Auth · Stripe · LemonSqueezy · Apple/Google IAP
Background Jobs
Trigger.dev · Vercel Cron · Inngest · custom Node workers
Voice + Realtime
OpenAI Realtime · ElevenLabs · Vapi · Retell · WebSockets · SSE
Observability
Sentry · OpenTelemetry · Vercel Analytics · LogSnag · custom dashboards
How a build runs
Prototype in week 1
A working prototype with the core AI workflow lands in your hands within 5 to 7 business days. Branded, deployed to a preview URL, real model, real data.
Build to production
Auth, billing, multi-tenant data model, real integrations, observability, evals. Ships to production on your Vercel + Supabase. Code in your GitHub.
Launch + handoff
Soft launch with a small user cohort, gather feedback, iterate. Post-launch support window (30, 60, or 90 days). Then your team or a contractor takes the keys.
Why Mi Assist AI
We ship custom AI apps that look and feel premium. Not boilerplate dashboards.
We use Vercel + Next.js as our default — fastest path from idea to live URL.
You own the GitHub repo, the Vercel project, the Supabase database, and the Stripe account.
Anthropic-native engineering. Latest Claude SDK, MCP, sub-agents, hooks, observability.
We design for the human in the loop, not just the AI. Approve buttons, edit fields, audit logs.
Free post-launch support window. After that, hand off cleanly to your team or stay on retainer.
Custom AI web apps across South Florida
Common questions
Build your custom AI app
Free 60-minute discovery call. We scope the prototype, the MVP, and the v1. You leave with a fixed quote within 48 hours.