I Gave an AI Agent a Credit Card and Told It to Set Up Subscriptions

TL;DR: I pointed an AI agent at RevenueCat's MCP server and told it to configure a full subscription setup for a app. It mostly worked. Products, entitlements, offerings, packages - all created through tool calls, no dashboard clicks. But "mostly" is doing heavy lifting in that sentence. Here's what actually happened. You've built an app with AI. Maybe Claude wrote your frontend, maybe Cursor handled your backend. The app works, it's live, and now you need to make money from it. This is where most vibecoders stall.