Open Source AI Agent to Run Your Subscription Billing
Monetize your AI apps and assistants down to the single action, using Stripe, PayPal, 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.
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. 🙌
About Billing MCP By SubscriptionFlow on Product Hunt
“Open Source AI Agent to Run Your Subscription Billing”
Billing MCP By SubscriptionFlow launched on Product Hunt on November 10th, 2026 and earned 60 upvotes and 1 comments, placing #45 on the daily leaderboard. Monetize your AI apps and assistants down to the single action, using Stripe, PayPal, 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.
On the analytics side, Billing MCP By SubscriptionFlow competes within SaaS and Artificial Intelligence — topics that collectively have 528.8k followers on Product Hunt. The dashboard above tracks how Billing MCP By SubscriptionFlow performed against the three products that launched closest to it on the same day.
Who hunted Billing MCP By SubscriptionFlow?
Billing MCP By SubscriptionFlow was hunted by Kashif Saleem. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Billing MCP By SubscriptionFlow including community comment highlights and product details, visit the product overview.
Kashif Saleem
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. 🙌