Rails 8.1 · Production ready

Ship your Rails SaaS
in a weekend, not a month

Auth, billing, AI integration, multi-tenancy, admin panel, and Kamal deployment — all wired up and working. Skip the boilerplate. Build your product.

Get the boilerplate → €149 one-time · lifetime updates · single dev license

app/services/anthropic_service.rb

      # Already wired up. Just call it.

      service = AnthropicService.new(

        account: current_account,

        user: current_user

      )

      result = service.chat(

        prompt: params[:message],

        system: "You are a helpful assistant."

      )

      # Rate limiting, usage tracking, cost calculation

      # — all handled automatically. Per plan.

The problem

Every Rails SaaS starts
the same way

Two weeks of setup before you write a single line of real product code.

skip Devise setup, confirmable, OAuth callbacks, magic links
skip Stripe webhooks, Pay gem config, plan syncing
skip Multi-tenant scoping, account switching, membership roles
skip Anthropic SDK wrapper, token tracking, rate limiting
skip Admin panel, Kamal config, Dockerfile, seed data

done All of the above, already built, tested, and committed
done 17 RSpec examples + 15 Playwright e2e tests passing
done Rubocop clean, Brakeman zero warnings
done CLAUDE.md + 4 Claude Code slash commands

What's included

Everything. Nothing missing.

Six layers of production-ready code, wired together the Rails way.

🔐

Authentication

Email/password, magic links, Google OAuth, GitHub OAuth. Confirmable. All on one User model.

💳

Billing

Stripe Checkout + Customer Portal via Pay gem. Plan feature gating with a jsonb features column.

🏢

Multi-tenancy

Session-based accounts. Users belong to multiple accounts. All queries scoped to current_account.

🤖

AI integration

AnthropicService with rate limiting, token tracking, and cost calculation in cents. Per-plan daily limits.

⚙️

Admin panel

Custom /admin namespace. Users, accounts, AI usage, dashboard KPIs. No gems, pure Rails + Tailwind.

🚀

Deployment

Kamal 2 config, Dockerfile, Solid Queue + Solid Cache. No Redis. Deploy to any VPS in one command.

Rails 8.1 Hotwire Tailwind 4 Claude Code ready Devise Pay gem Stripe Anthropic SDK RSpec Playwright Kamal 2 PostgreSQL Propshaft DaisyUI

The maker

Built by a Rails dev,
for Rails devs

Owen Moss

@OKMantis · Ibiza, Spain

7 years building Rails apps. I got tired of spending the first two weeks of every project wiring up the same auth, billing, and admin setup. So I built this once, properly, with tests — and now you don't have to.

Questions? Reply to the Gumroad receipt email. I actually respond.

Pricing

One price. No subscription.

Single developer license

€149

ONE-TIME · LIFETIME UPDATES

Full source code, private GitHub repo access
All 6 layers: auth, billing, AI, admin, tenancy, deploy
17 RSpec + 15 Playwright tests included
CLAUDE.md + 4 Claude Code slash commands
Lifetime updates as Rails evolves
Email support from the maker

Buy now →

After purchase, email your GitHub username to get repo access.
Single project license — no redistribution.

Ship your Rails SaaSin a weekend, not a month

Every Rails SaaS startsthe same way

Everything. Nothing missing.

Built by a Rails dev,for Rails devs

One price. No subscription.

Ship your Rails SaaS
in a weekend, not a month

Every Rails SaaS starts
the same way

Built by a Rails dev,
for Rails devs