An indie developer automating billing with MCP

Illustrative scenario — Tierux is pre-launch. This shows how a developer would use Tierux, not a named customer.

Building a subscription app as a solo developer means wearing every hat — product, design, backend, and billing. For an iOS developer with a growing todo-list app, billing was the one integration he kept putting off. His previous app had taken two weeks to wire up StoreKit 1 with server-side receipt validation. This time, he wanted a faster path.

He had already adopted Cursor as his primary editor and was comfortable describing tasks to his AI agent. When he found Tierux's MCP-first approach, the workflow clicked: instead of clicking through App Store Connect and reading StoreKit 2 documentation, he could describe what he wanted and let the agent do it.

20-minute setup: one prompt, two platforms

He connected the Tierux MCP server to Cursor and wrote:

I have a todo-list app on iOS with a free tier.
Add a Pro subscription — $4.99/month with a 3-day trial on iOS,
and the same plan on Google Play (I am launching Android next month).
Map both to a "pro" entitlement.
Build a paywall that shows "Try free for 3 days" as the headline.
Add App Store Server Notifications webhook for renewal tracking.

The agent configured the App Store product through Tierux, set up the product mapping for both platforms, built the paywall configuration, and enabled the webhook endpoint. Each step returned a preview — he reviewed the paywall design in the live phone preview before confirming. The entire setup took 20 minutes from opening Cursor to a verified test purchase on his iPhone.

Android launch: zero additional work

When he was ready to launch on Android a month later, the product mapping was already in place. He connected the Android SDK, launched the billing flow, and called the same /verify endpoint. The entitlement model was identical across platforms — no separate code paths, no duplicate configuration.

"I used to dread billing integrations. Now I describe what I want and my agent builds it. The cross-platform setup — iOS now, Android later — worked without me touching a single Google Cloud console."

Results