Billing that actually hooks up
Pay gem, flat subscription plans, plan entitlements (member limits per tier), Stripe webhooks, and checkout flows wired across models, controllers, and tests.
The ultimate SaaS foundation. Download a regression-tested app with teams, Stripe, and admin pre-configured. Skip the setup sprint and ship features today.
Everything in Professional, TODAY.
Beta is $100 one-time · $449 after beta · one year of updates
Why this exists
Teams, Stripe subscriptions, webhooks, admin, and deploy recipes touch dozens of files. AI can draft any one of them. What still takes weeks is making the whole stack work together and stay green in CI. Zero Config Rails is a compiler for that layer.
Pay gem, flat subscription plans, plan entitlements (member limits per tier), Stripe webhooks, and checkout flows wired across models, controllers, and tests.
Accounts, teams, memberships, invitations, and Pundit policies scoped the way a B2B product expects. You extend policies; you don't invent the tenancy model on sprint three.
Every compile runs the Beta bundle matrix: Minitest, system tests, Brakeman, and bundler-audit. You get source you own, after CI has already passed on that exact config.
Pick your recipe in the portal. We compile from a pinned Holy Grail base, apply only the toggles you chose, and ship a Rails 8 monolith you deploy anywhere. Same integrated stack every time, with a changelog and re-downloads for a year when the base moves forward.
.cursor/rules and AGENTS.md in every zip
The pipeline
Your choices become a license-gated zip from a tagged base and recipe pipeline, not a one-off AI dump.
SaaS recipe or Vanilla Rails. Toggle auth (native or Devise), Pay, Pundit, admin flavor, Sentry, Kamal on the SaaS path. Deferred features stay out of the configurator.
AppBuilder::CompileJob clones the Holy Grail tag, applies recipes, runs the CI matrix, uploads to S3. Signed URLs, rate limits, audit log.
bin/setup and build
Minitest and system tests, Brakeman, bundler-audit, Docker, devcontainer, and .cursor/rules plus AGENTS.md in the zip. You own the repo; we maintain the base.
Features
A regression-tested Rails 8 monolith with accounts, billing, admin, deploy, tests, and DX - all configured in the portal and shipped as source you own. Flat subscription billing only; no bash scripts.
Configure toggles in the portal, generate a regression-tested app zip, and download after checkout. No bash glue scripts.
Holy Grail Rails 8 base plus a SaaS strip (Pay, teams, billing) or Vanilla Rails close to what `rails new` ships, chosen at compile time.
.cursor/rules and AGENTS.md in every zip so Cursor and agents understand your generated layout.
Ship with Rails 8 native authentication or Devise. Pick the stack that fits your team in the configurator.
Accounts, teams, memberships, and invitations wired for multi-user SaaS from day one.
Pundit policies across resources. Authorization patterns your team can extend.
Pay gem with flat subscription plans, Stripe webhooks, and subscription-to-tier mapping for entitlements. Per-seat and metered billing are coming soon.
Per-tier limits such as max team members (e.g. Free 5, Pro 50). Enforced on invites and memberships, with usage shown in billing UI.
Solid Queue, Solid Cache, and Solid Cable on PostgreSQL. Background work without Redis on day one.
Tailwind CSS, View Component, Hotwire, Turbo, and Stimulus for a modern web app.
esbuild via jsbundling-rails or import maps — pick the JS pipeline that fits your app.
Choose from Avo or a minimal namespaced admin.
Kamal-first deploy path with optional Render and Fly notes so production is not an afterthought.
Track errors and performance signals with APMs. Choose from Sentry, New Relic or Honeybadger.
Action Mailer with templates for invites, billing, and account events. Marketing ESP integrations later.
Solid Queue for async work — mailers, webhooks, and maintenance without extra infrastructure.
Minitest, Capybara system tests, and GitHub Actions.
Brakeman, bundler-audit, and RuboCop-Rails in the generated repo. Fail builds on known risks.
Dockerfile, compose, and devcontainer for reproducible local and CI environments.
Rails i18n wiring from day one.
Coming soon
Everything above ships in your compile today. Below is what we are building next: multi-tenant flavors, public API, per-seat billing, and the rest.
Tenant-scoped data and routing for B2B products that need isolation by account.
Versioned JSON API with generated OpenAPI schema docs for mobile apps, partner integrations, CLI tools, and AI agents.
Flipper-backed toggles for gradual rollouts without redeploying your monolith.
Issue and revoke keys for machine clients with scoped access.
OmniAuth providers alongside native auth or Devise.
TOTP and WebAuthn hardening for high-trust SaaS accounts.
Sign in as a user safely when debugging account issues. Professional and Unlimited tiers.
Brand colors and fonts wired through the generated UI. Professional and Unlimited tiers.
Quantity-based and metered Stripe plans beyond flat subscriptions.
Rails i18n wiring with a user-facing locale switcher.
Solid Cable patterns plus a reference real-time UI.
ruby_llm integration with streaming responses in the generated app.
vite_rails as a compile-time alternative to esbuild and import maps.
Charts for dashboards and admin metrics. Professional and Unlimited tiers.
Configurator presets
Agencies and indie founders hit different checkout paths, but the underlying stack is identical and CI-backed.
Best for founders
Pre-loads the SaaS recipe and Professional building blocks so your first sprint is feature work — not gem archaeology.
Best for studios
White-label naming, same stack every engagement. Unlimited tier maps here when live — one compiler, many client configs.
Both paths compile from the same Holy Grail base — identical gem matrix, identical regression suite, different portal checkout.
Pricing
High-ticket, low-churn model. Checkout and license enforcement live in the portal; tiers below reflect the public roadmap.
One-time
$100
Full Professional today at Beta price
Beta is limited. When it closes, pricing moves to the standard tiers.
After beta
$249
Starter
After beta
$449
Professional
After beta
$699
Unlimited
One-time purchase · 5-day no-ask refund
Compare all featuresProof before purchase
No public source drop. The only hands-on preview is our hosted demo (resets nightly) plus a configurator preview in the portal. Downloads stay license-gated.
Real teams, billing, and admin flows on a canonical Demo SaaS build. Test Stripe only, seeded users, no outbound email. Explore what a generated app feels like without cloning a repo or generating one yourself.
Use the same app.zeroconfigrails.com app customers use to generate projects. Walk the wizard, inspect the stack summary and file tree, and try plans before checkout.
Preview data resets daily. Checkout is required to generate and download a zip.
Open app.zeroconfigrails.com app →What we do not ship publicly
No open GitHub demo repo. No anonymous zip downloads. No per-visitor app generation.
Ready when you are
Your next Rails SaaS should start with green CI, not a two-week gem archaeology sprint.
Pick toggles in the portal
SaaS or Vanilla Rails , auth mode, admin flavor, observability.
Download a compile that already ran the matrix
Not a template dump. A CI-verified build from the Holy Grail pipeline.
Ship features on a base we maintain
Re-download when base_version bumps within your update window.
$100 one-time · full Professional · one year of updates on generated code.
Questions? [email protected]