Quickstart
Go from creating an account to your first subscription and test payment.
Build with an agent
Connect your assistant to Commet’s documentation and API through MCP.
What can you build with Commet?
Subscriptions that match your product
Sell a monthly or annual plan with a fixed price, usage charges, or a combination of both. Define features such as API calls, team seats, storage, or access to a capability, then package them into plans. A subscription connects a customer to a plan. Commet manages its billing cycle and invoices as the subscription renews or changes. You can offer trials, handle upgrades and downgrades, and configure failed-payment recovery.Pricing based on consumption
An AI request, an API call, and a stored file represent different kinds of usage. Commet lets you define how that usage affects the customer’s bill or available allowance. Each plan has one consumption model:
Your application reports usage to Commet. For AI products, token billing uses the model and token counts you report to calculate consumption with your configured margin. You can also manage team seats and quantities such as stored resources.
One-time purchases and optional extras
Accept a one-time payment without creating a plan or subscription. This is useful for a standalone purchase or service alongside your recurring product. For subscribers, offer add-ons to extend a plan, credit packs for more consumption, or balance top-ups. These give customers a way to buy more without changing their entire subscription.A billing experience customers can manage themselves
Use checkout to collect payment and the customer portal to let customers view invoices, update payment methods, and review usage. Configure plan groups to offer self-service plan changes. You can also create reusable offers, distribute them through promo codes, and configure regional prices for different markets and currencies.Choose how you accept payments
Use Commet’s Merchant of Record offering, or connect your own Stripe or dLocal account. For payments processed through its Merchant of Record offering, Commet handles tax collection and remittance, compliance, refunds, and disputes on your behalf. With your own Stripe or dLocal account, you remain the merchant and manage funds and payouts with that provider. Commet provides the billing layer in either setup. The guides cover payment routing, transactions and refunds, and finance and payouts. Before using Commet as Merchant of Record, review supported countries and verification requirements.Integrate the way you work
Start in the dashboard to configure your product, then connect your application with an API key. Choose a guide for your stack:
Using Better Auth? The Commet plugin connects customer creation and billing to your authentication flow. For complete applications you can adapt, explore the examples.