Client Portal & SaaS Kit
Ship a client portal without the three-month build.
A complete SaaS foundation with auth, billing, team management, and an admin dashboard. Not a tutorial project — a tested, production-grade codebase with row-level security policies, webhook handlers that actually work, and type-safe database queries generated from your schema.
Saves ~40 hours of Stripe webhook debugging, Supabase RLS configuration, and auth flow edge cases.
The Architecture
Why This Stack
Supabase for auth and database because it gives you Postgres with row-level security out of the box. No custom middleware, no token juggling. Stripe for billing because nothing else handles metered + flat-rate plans in a single integration. Resend for transactional email because it has the best developer experience and deliverability.
Why You Can't Just AI This
AI can scaffold a login form. It cannot wire up Supabase RLS policies that correctly scope data per organisation, handle Stripe webhook edge cases (duplicate events, out-of-order delivery), or set up a team invite flow with proper email verification. This kit has 40+ hours of auth and billing edge-case handling baked in.
Who this is for
Agencies delivering client portals, membership sites, or internal tools. Freelancers building SaaS MVPs for equity or for clients.
Who this is NOT for
Anyone who needs a CMS or content-heavy site. This is an application framework, not a website builder.
The Market Opportunity
£232bn
UK SaaS market
Projected 2026, every business needs portals and tools
£5–25k
Client portal fee
What agencies charge for a custom portal build
3 months
Typical build time
Auth + billing + teams from scratch
82%
Fail at billing
SaaS projects that ship broken payment flows first time
Every growing business needs a client portal, a dashboard, or an internal tool. The demand far outstrips the supply of developers who can build them. Agencies that can deliver a working SaaS prototype in a week, not a quarter, close deals their competitors can't even quote for.
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