$99 for your first mod, $75 for every mod after. Own production-ready source code forever—zero subscriptions, zero platform fees.
HelpfulMods

Source for the hard part

25 production-ready features.
Launch weeks sooner.

25 production-tested backend modules for your coding agent to connect to your app. No subscriptions or revenue cut, and no SaaS lock-in. Pick the feature, hand the prompt to Cursor, Claude or Codex, and get back to building your product.

Try it before you buy it. Open any mod’s product page and select Try this mod to use the included interface.

BEST VALUE · SAVE $200

Starting a new SaaS? Grab the $199 Foundation Kit.

A complete B2B SaaS core for $199.

Skip months of core plumbing. Get five flagship mods—Funnel and Revenue, Paid Membership and Teams, Onboarding Journeys, In-app Notifications, and Customer Support—pre-integrated into a single working application with accounts, workspaces, billing, and projects already wired together. $399 standalone value, yours for $199.

$199$399 standalone value · One-time purchase

Get the Foundation Kit ($199) Try the demo
Foundation Kit workspace with projects, team navigation, billing, an inbox and support, using sample data.
A sample workspace in Foundation Kit.
A customer and support staff exchanging replies in Foundation Kit.
Support, in the same app.
25 production-ready mods

Bundles & Kits

Start with a complete workflow.

Explore all bundles
Paid Publishing Bundle

Launch a paid newsletter & content engine.

Recurring Writing + Funnel & Revenue + Social Publishing Desk.

$249 Save $48 · 3 mods
Agency Workspace Bundle

Build your client & agency workspace.

Paid Membership & Teams + Documents + Workflow Automation + Reporting.

$324 Save $72 · 4 mods
Appointment Business Bundle

Book clients and bring them in.

Booking & Calendar + Funnel & Revenue + Onboarding Journeys.

$249 Save $48 · 3 mods
Forms + Leads

The inbound sales engine

Capture inquiries and turn them into a follow-up pipeline.

Two mods · $174Explore this pair →
Booking + Notifications

The client booking hub

Connect appointments to your app’s customer notification inbox.

Two mods · $174Explore this pair →
Website Chat + Help Center

The self-service support stack

Give customers searchable answers and an AI support assistant.

Two mods · $174Explore this pair →

Multi-mod discount applied automatically: Your first mod is $99 and every additional mod drops to $75 ($24 off the $99 single-mod price), whether you choose a bundle or build your own stack. Already bought a mod? Sign in at checkout for $75 per additional mod.

Explore the mod library

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Pay once. Own the code forever.

Production TypeScript source, agent setup prompts, automated tests, 30 days of setup support and 12 months of bug and security updates. One commercial product, unlimited end users.

Interactive walkthrough

Watch how mods handle
production edge cases.

Click through the sample states below: Recurring Writing holds a draft that repeats an archive passage, Funnel & Revenue restores an interrupted checkout, and payment checks keep app access aligned when Stripe events arrive out of order.

Explore the examples with sample data.

Recurring Writing · Studio Notes

Archive-Checked Drafting in Action.

Inspect how Recurring Writing turns raw notes into a Friday issue, flags repeated archive passages before publication, and holds the draft for editorial sign-off. Select an issue to read it.

Explore the mod ↗
01 ·
Notes and past issues

Each draft starts from Ana's notes and is checked against everything already published.

02 ·
A draft on schedule

A new draft arrives for each Friday's issue. It is checked against past issues, and detected repeats are held for review.

03 ·
Approved and saved

Every approved issue is saved to the archive.

What comes with the source

Give your agent a head start.

Every download includes the full source code, agent setup prompts, integration guide, and test suite—everything Cursor, Claude, or Codex needs to wire the feature into your app.

Read the installation walkthrough · Guide for your coding agent

Preview the setup questions

Guided by your own agent

Setup questions for Recurring Writing

Here’s a quick preview of the questions your agent asks when setting up Recurring Writing. Play with the controls—everything stays in your browser.

Interactive preview
Set up Recurring Writing01 / 03
What will it be writing?

BUILD YOUR STACK

Mix & match. Every mod after your first is $75.

Combine the features your product needs. Your first mod is $99, and every additional mod is $75 in the same cart or on a future order. Start with Foundation Kit for $199 to get its five connected mods, then add specialist features for $75 each.