saasify — turn any project into a SaaS

A coding-agent skill that converts a regular, single-user app into a production-ready multi-tenant SaaS — authentication, organizations & teams, role-based permissions, plans & billing, invites and onboarding.

npx skills add dolevhayut/saasify

Works with Claude Code · Cursor · Codex and other coding agents. Free & open-source (MIT).

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Why

You built something great. It works. But to actually sell it, you hit the wall every SaaS needs and most side-projects skip:

• 🔓 Auth — no login / signup / sessions
• 🏢 Multi-tenancy — every customer sees the same data (a security nightmare)
• 👥 Roles & permissions — no admin, no members, no teams
• 💳 Plans & billing — how do you even charge? tiers? invoices?

saasify encodes years of real SaaS builds into one skill. It detects what your project already has, reports the gaps, confirms scope with you, then builds the missing pillars in the right dependency order — instead of you wiring it all by hand.

The 4 pillars (built in order)

Pillar	What you get
🔓 Authentication	Login/signup, sessions, OAuth, password reset, profiles
🏢 Multi-tenancy	Organizations, organization_id scoping, database-enforced isolation (RLS)
👥 RBAC	Owner/admin/member roles (or richer hierarchies), permission helpers, guards
💳 Plans & Billing	Plan catalog, feature gating, usage limits — Stripe, HYP/היפ (Israeli), license keys, credits

Plus the connective tissue: invites & onboarding.

Install

Interactive (pick your agent):

npx skills add dolevhayut/saasify

Global — all agents, no prompts:

npx skills add dolevhayut/saasify --yes --global

Project-local — all agents, no prompts:

npx skills add dolevhayut/saasify --yes

The CLI auto-detects which agents you use:

Agent	Install path
Amp, Antigravity, Cline, Codex, Cursor, Gemini CLI, GitHub Copilot, Warp, and more	.agents/skills (universal, always included)
Claude Code	.claude/skills
Aider	.aider-desk/skills
Augment	.augment/skills

Or clone it manually into your agent's skills folder (e.g. ~/.claude/skills/saasify/) — no build step.

Use

Just ask your agent, in English or Hebrew:

turn this project into a SaaS
add login, organizations and plans
הפוך את הפרויקט הזה למערכת SaaS
תוסיף התחברות, ארגונים, הרשאות ומסלולי תשלום

The skill runs a gap analysis, asks a few scoping questions (tenancy model, billing gateway, plan tiers), then implements — pillar by pillar, verifying as it goes.

What's inside

File	Purpose
SKILL.md	Orchestrator: the 4 pillars, workflow, principles
references/00-gap-analysis.md	Detect stack & what already exists
references/01-auth.md	Supabase Auth / NextAuth, login pages, profiles
references/02-multitenancy-rls.md	Orgs, organization_id, RLS, backfill
references/03-rbac.md	Roles, permission helpers, route guards
references/04-billing-plans.md	Plan catalog, Stripe, HYP/היפ, licenses, metering, feature gating
references/05-onboarding-invites.md	First-run onboarding + invite flow
references/06-checklist.md	Security & verification checklist
assets/supabase/0001_saas_foundation.sql	Ready-to-adapt foundation migration

Default stack

Supabase (Auth + Postgres + RLS) with Next.js or Vite/React, shadcn/ui, and Stripe + HYP for billing. The patterns are stack-agnostic — the references note Prisma / Drizzle / Firebase / NextAuth equivalents.

Principles it enforces

1. Tenancy is enforced at the database (RLS), never the UI.
2. Never ship the service-role / secret key to the browser.
3. Backfill data before enabling RLS, or you lock everyone out.
4. Roles live on the membership, not the user.
5. One feature-gating helper, checked on client (UX) and server (enforcement).
6. Billing state is driven by verified webhooks, not the checkout redirect.

License

MIT © Dolev Hayut