Updated 19 Oct 2026
Best AI stack for a client portal
A private portal where your clients log in to see project status, swap files and pay invoices.
| Role | Tool & why | Price |
|---|---|---|
| Builder | Lovable Builds the login, client dashboard and file pages from a prompt; native Supabase keeps each client's data separate. | Free (5 build credits/day, up to 30/mo); Pro from $25/mo (100 credits), $21/mo billed annually |
| Database + files | Supabase Projects, messages and file uploads (1 GB file storage free). Row Level Security stops clients seeing each other's data. | Free (500 MB DB, 2 projects, pauses after 1 week idle, 50k MAU); Pro from $25/mo |
| Login | Supabase Auth Email or magic-link login, invite-only so only your clients get in. | Included with Supabase: 50,000 MAU free; 100,000 on Pro |
| Payments | Stripe Send invoices or Payment Links from the portal; no monthly fee. | No monthly fee; 2.9% + 30c per successful domestic card charge (US) |
| Resend Tell clients when a project changes or a file is ready. | Free 3,000 emails/mo (100/day); Pro $20/mo for 50,000 |
Estimated cost at launch
~$26/mo + Stripe fees
💡 Before inviting real clients, sign in as two test clients and check that neither can see the other's projects or files. That one test catches most portal data leaks.
Copy-paste starter prompt
Build a client portal for my design agency. Clients log in with a magic link and only see their own projects: status, timeline, files to download and an upload area for feedback. An admin view lets me create clients and projects, change status and upload files. Add a 'Pay invoice' button that opens a Stripe Payment Link. Use Supabase for data, file storage and auth, with Row Level Security on every table.
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Prices checked on official pricing pages on 19 Oct 2026; confirm before buying. Some links may be affiliate links.