How to vibe codeFirstbase
Incorporation, compliance, bookkeeping, and taxes – all in one place.
firstbase.io ↗SaaS / Business Operations
The verdict: can you vibe code Firstbase?
Build a personal subset for tracking your own entity's compliance and documents, but keep paying for Firstbase if you need actual state filings and legal liability coverage.
Firstbase combines standard SaaS document workflows with complex government bureaucracies and financial data pipelines. While you can easily vibecode the dashboard UI, document storage, and tracking database in a couple of weekends, you cannot automate the underlying legal reality: actual state incorporation filings, registered agent presence across 50 states, and certified tax preparation require human legal operations and official state API partnerships that an indie builder cannot replicate.
Estimated effort: 3-4 weeks of focused development
What you can't replicate
- Official state-level filing authorization and accredited registered agent status in Delaware and Wyoming
- Partnership agreements with commercial banks like Mercury
- Certified CPA liability coverage for tax filings like Form 5472 and corporate returns
Founded
2019
Raised
$7.22M
Team
40-60
Cheapest paid tier
$399
What Firstbase does
An all-in-one company operating system and business-formation platform designed to help local and international founders launch, manage, and scale US entities (LLCs or C-Corps).
Core features
- User authentication and profile management
- Company formation questionnaire and state filing workflow
- Virtual mailroom document scanner and dashboard
- Registered agent compliance tracker and annual report reminder system
- Bank feed transaction aggregator and categorization engine
- Document storage and generation (bylaws, 83(b), Form 5472 packets)
The business
Pricing
- Firstbase Start$399
- Firstbase One$199/mo
- Mailroom Basic$35/mo
- Accounting$599/mo
Funding
$7.22M from Y Combinator, Amino Capital, Carta Ventures, Earnest Capital, Graphene Ventures
Pay vs build, cumulative
Break-even at month 1 — after that, every month is money kept.
The hard parts of vibe coding Firstbase
- Integrating directly with state division of corporation APIs for automated entity filings
- Building resilient bank feed connectors and automated transaction categorization pipelines
- Ensuring absolute legal and tax compliance accuracy where data corruption triggers penalties
- Managing physical mail digitization operations and secure document handling workflows
How to vibecode Firstbase
Prerequisites
Node.jsfree
Runtime environment for the Next.js full-stack application.
GitHubfree
Source control and deployment pipeline integration.
Supabasefree tier
Managed PostgreSQL database and file storage for user documents.
AI coding tools
Recommended stack
| Frontend | Next.js with Tailwind CSS and shadcn/ui components |
|---|---|
| Backend | Next.js App Router API routes and server actions |
| Database | Supabase PostgreSQL with Row Level Security |
| Auth | better-auth |
| Payments | Stripe (optional for personal testing) |
| Other | Resend for transactional compliance alerts, UploadThing for document and mail scan uploads |
Build guide
01Project Scaffolding and Authentication
Initialize the Next.js project with Tailwind CSS, configure shadcn/ui, set up Supabase connection, and implement better-auth for user accounts.
Create a new Next.js 16 project using the App Router, TypeScript, and Tailwind CSS. Initialize shadcn/ui and configure a clean dashboard layout with a sidebar navigation bar. Integrate better-auth with email/password authentication connected to a Supabase PostgreSQL instance. Ensure middleware protects all dashboard routes and redirects unauthenticated users to the sign-in page.02Database Schema for Entities and Documents
Define relational database tables for companies, incorporation details, compliance tasks, and uploaded mail documents.
Write a complete Prisma or Supabase SQL migration script for a business operations platform. Create tables for `companies` (id, user_id, name, state of incorporation, entity type LLC/C-Corp, ein, status, created_at), `compliance_tasks` (id, company_id, title, due_date, status, category), `mail_items` (id, company_id, sender, received_date, scan_url, status), and `transactions` (id, company_id, date, description, amount, category). Add appropriate foreign key constraints and index user lookups.03Company Incorporation Wizard UI
Build a multi-step interactive form simulating the company formation and state/type selection process.
Build a multi-step incorporation wizard component using React Hook Form and Zod validation. Step 1: Choose entity type (LLC vs C-Corp). Step 2: Choose state (Delaware or Wyoming). Step 3: Enter preferred company name and check availability against a local mock database. Step 4: Founder details and ownership split. On final submission, save the company record to the Supabase database and redirect the user to their new company dashboard overview.04Virtual Mailroom and Document Vault
Create a simulated mailroom interface displaying digitized mail pieces with PDF/image previews and document storage.
Implement a Virtual Mailroom dashboard page in Next.js that fetches mock incoming mail items for the active company. Use UploadThing to allow users to upload PDF scans of physical mail. Build a document viewer modal that renders uploaded scans securely from Supabase storage buckets. Include filters for read/unread mail and action buttons to request physical forwarding or digital shredding.05Compliance Tracker and Calendar
Develop a compliance dashboard tracking state annual reports, franchise taxes, and vital corporate deadlines.
Create a compliance tracking dashboard view that displays upcoming state deadlines, annual report due dates, and franchise tax obligations. Implement a card layout showing compliance health status (Good Standing vs Action Required). Add a form to manually add custom compliance tasks with email notification reminders scheduled via Supabase triggers or Resend.06Accounting and Transaction Feed
Build an accounting dashboard with transaction categorization and financial summary widgets.
Build an Accounting dashboard page featuring financial summary metric cards (Total Revenue, Expenses, Net Income). Create an interactive transaction table with columns for date, merchant, amount, and category dropdowns (Software, Travel, Legal, Meals). Include a mock Plaid bank account connection button that populates sample bank transactions into the database upon clicking.07Polish, Error Handling, and Testing
Add comprehensive error boundaries, loading skeletons, toast notifications, and verify responsive design across viewports.
Audit the entire Next.js application for loading states, empty states, and error handling. Add React toast notifications for all form submissions (company creation, mail actions, task updates). Ensure all dashboard pages are fully responsive on mobile screens with a collapsible mobile menu. Verify that Row Level Security policies in Supabase correctly restrict users to viewing only their own company data.
Cost vs paying for Firstbase
What will you build it with?
Starting total with Claude Code$0 one-time
Starting costs (one-time)
- Custom domain$12
- AI coding credits$20
Total~$32 one-time
Ongoing costs (monthly)
- Vercel / Supabase hobby tiers$0/mo
Total$0/mo
Paying for Firstbase
$199/mo (Firstbase One)
Your time to build
40-60 hours
AI tool credits
$20 (Claude Code / Cursor Pro)
Break-even
Free (personal use clone)
Vibe code Firstbase: FAQ
- Can you vibe code Firstbase yourself?
- Solid side project — 62/100 vibecodeable. Build a personal subset for tracking your own entity's compliance and documents, but keep paying for Firstbase if you need actual state filings and legal liability coverage.
- How long does it take to vibe code Firstbase?
- 3-4 weeks of focused development — roughly 40-60 hours of hands-on time with an AI coding agent.
- How do you build your own Firstbase?
- Scoped to personal use: Next.js with Tailwind CSS and shadcn/ui components on the front, Next.js App Router API routes and server actions behind it, Supabase PostgreSQL with Row Level Security for data. Follow the 7-step build guide on this page — each step has a paste-ready prompt for an AI coding agent.
- How do you code your own Firstbase without being an expert?
- Use an AI coding tool (Claude Code or Cursor) and work in small steps: scaffold, data model, core screens, then deploy. Realistic effort: 3-4 weeks of focused development. The prompts on this page are written so the AI does the heavy lifting.
- How much does it cost to vibe code Firstbase instead of paying?
- About ~$32 one-time to start and $0/mo to run, versus $199/mo (Firstbase One) for Firstbase. Break-even: Free (personal use clone).
- What stack should you use to vibe code Firstbase?
- Next.js with Tailwind CSS and shadcn/ui components; Next.js App Router API routes and server actions; Supabase PostgreSQL with Row Level Security; plus Resend for transactional compliance alerts, UploadThing for document and mail scan uploads.