Launching today
Billing MCP By SubscriptionFlow
Open Source AI Agent to Run Your Subscription Billing
16 followers
Open Source AI Agent to Run Your Subscription Billing
16 followers
Monetize your AI apps and assistants down to the single action, using Stripe, PayPal, NMI, Authorize.net and other major payment gateways. With the SubscriptionFlow MCP billing plugin, bill customers per question answered, task completed, or custom action. Offer prepaid credit wallets or post-billing with real-time balance checks that eliminate overspending. Set dynamic usage rates, automate metering, and protect margins, turning AI consumption into automated revenue.
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Hey Product Hunt! 👋
We’re the team behind SubscriptionFlow, and today we’re launching our open-source Billing MCP.
The problem we kept hearing about: AI products don’t fit flat monthly pricing. One customer asks 10 questions, another runs 10,000 tasks, and the cost to serve them is wildly different. Many teams end up either eating the cost or building a fragile usage-tracking system from scratch.
What we built: an MCP plugin that lets you bill customers for every AI action their assistants and apps perform, whether that’s a question answered, a task completed, or a custom action you define.
What it does:
💳 Prepaid credit wallets or post-billing: you pick the model that fits your business
⚡ Real-time balance checks: a customer’s balance is verified before an action runs, so they can never overspend
📊 Dynamic usage rates and automated metering: protect your margins as costs change
🔌 Works with the gateways you already use: Stripe, PayPal, NMI, Authorize.net and other major gateways
Why open source? Billing sits at the center of your business, so you should be able to see exactly how it works, adapt it to your product, and trust what handles your revenue. We’d love contributions and feedback from the community.
Who it’s for: developers and founders building AI assistants, agents, and AI-powered apps who want to turn raw AI consumption into accurate, automated revenue.
We’d love your help with a few questions:
How are you charging for AI usage today: per seat, per token, per action, or something else?
Which action types would you want to meter first?
What would make this a must-have for your stack?
Thanks for checking us out. We’ll be here all day answering questions and taking feedback. 🙌