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saas-starter by @cmicpace · phatstacks

saas-starter

What it takes to ship a SaaS in a weekend: Next.js on Vercel, Supabase for data and auth, Stripe for money, Claude for the AI parts.

CColin·built for SaaS·v1·updated 3 days ago·forked from @demo/saas-starter

Jump to

About this stack
The stack18
Installed with the stack18
Conventions
Forks

C

Colin@cmicpace

2 stacks

About this stack

18 tools
7 layers
18 setup steps

The stack18 tools

Frontend5
Backend2
Auth & money3
Infra1
Ops & quality4
AI2
Agent config1

Frontend5 tools

Next.js’s website, in a new tab:
Next.jsFramework
Colin: App Router, server components by default
Tailwind CSS’s website, in a new tab:
Tailwind CSSStyling
Colin: v4, tokens in CSS
shadcn/ui’s website, in a new tab:
shadcn/uiUI kit
Lucide’s website, in a new tab:
LucideIcons
Zod’s website, in a new tab:
ZodState & forms
Colin: every form and every API boundary

Backend2 tools

TypeScript’s website, in a new tab:

Auth & money3 tools

Supabase Auth’s website, in a new tab:
Supabase AuthAuth
Colin: GitHub and magic-link sign-in

Infra1 tool

Vercel’s website, in a new tab:
VercelHosting

Ops & quality4 tools

PostHog’s website, in a new tab:

AI2 tools

Anthropic API’s website, in a new tab:
Anthropic APIModels
Vercel AI SDK’s website, in a new tab:

Agent config1 tool

Claude Code’s website, in a new tab:
Claude CodeCoding agent

Installed with the stack18 steps

npx phatstacks@0 use @cmicpace/saas-starter writes AGENTS.md and CLAUDE.md and lists these, in order, to run.

1
Next.jsnpx create-next-app@latest
2
Claude Codenpm install --global @anthropic-ai/claude-codefor the whole machine
3

Conventions

npm, not pnpm or yarn.
src/ layout, App Router only, server components unless a component needs the browser.
Writes go through server actions; env vars live in .env.local and never in the client bundle.
ESLint and Prettier on every commit.

Forks

No forks yet. Fork it to swap a tool or two and make it yours.

Build with this stack

One command sets up a new project with all 18 tools and writes the AGENTS.md your coding agent reads first.

$ phatstacks@0 use @cmicpace/saas-starter

TypeScriptRuntime & language

CColin: strict mode

Supabase’s website, in a new tab:

Supabase+1 add-onwith the MCP serverDatabase

CColin: Postgres, storage and row level security

Stripe’s website, in a new tab:

CColin: subscriptions with Checkout and the customer portal

Resend’s website, in a new tab:

CColin: transactional email from React templates

PostHog

Analytics

CColin: analytics and feature flags

Sentry’s website, in a new tab:

Vitest’s website, in a new tab:

Playwright’s website, in a new tab:

Playwright+1 add-onwith the MCP serverTesting

CColin: the sign-up and checkout flows only

Vercel AI SDKAI framework

CColin: streaming chat and tool calls

Tailwind CSSnpm install tailwindcss @tailwindcss/postcssv4: one @import "tailwindcss" in the CSS and no tailwind.config.js; Vite projects use @tailwindcss/vite instead of the PostCSS plugin

4

shadcn/uinpx shadcn@latest initcomponents are copied into the project; add each with npx shadcn@latest add <name>

5

Lucidenpm install lucide-react

Show all 18 steps

6
Zodnpm install zod
7
TypeScriptnpm install --save-dev typescript
8
Supabasenpm install @supabase/supabase-jsserver-rendered apps add @supabase/ssr for cookie sessions
9
Stripenpm install stripe
10
Resendnpm install resend
11
PostHognpm install posthog-js
12
Sentrynpx @sentry/wizard@latest -i nextjsthat's for Next.js; the wizard takes other platforms after -i (reactNative, sveltekit, remix …)
13
Vitestnpm install --save-dev vitest
14
Playwrightnpm init playwright@latest
15
Anthropic APInpm install @anthropic-ai/sdk
16
Vercel AI SDKnpm install ai
17
Supabase MCP serverclaude mcp add --transport http supabase https://mcp.supabase.com/mcpfor your agentthat's for Claude Code; other agents add the same URL and sign in when asked
18
Playwright MCP serverclaude mcp add playwright npx @playwright/mcp@latestfor your agentthat's for Claude Code; other agents run the same npx @playwright/mcp@latest