How do I add billing to my Java app?

Install the Commet SDK, add your API key, and start billing. Follow the [Java integration guide](/docs/integrate-with-java) for a step-by-step walkthrough with code examples.

Add billing with Java

Add subscriptions, usage-based pricing, metered billing, and payments to your Java application using the Commet Java SDK.

Start billing for free Read docs

Billing that fits your stack

Builder pattern initialization, typed response objects, and standard exception handling. Works with Spring Boot, Quarkus, Micronaut, or plain Java.

Billing.java

import co.commet.Commet;
import co.commet.params.CreateCustomerParams;
import co.commet.params.CreateSubscriptionParams;

Commet commet = Commet.builder()
        .apiKey(System.getenv("COMMET_API_KEY"))
        .build();

commet.customers().create(
        CreateCustomerParams.builder("user@example.com")
                .id("user_123")
                .build()
);

var subscription = commet.subscriptions().create(
        CreateSubscriptionParams.builder("user_123")
                .planCode("pro")
                .build()
);

String checkoutUrl = subscription.checkoutUrl();

import co.commet.Commet;
import co.commet.params.CreateCustomerParams;
import co.commet.params.CreateSubscriptionParams;

Commet commet = Commet.builder()
        .apiKey(System.getenv("COMMET_API_KEY"))
        .build();

commet.customers().create(
        CreateCustomerParams.builder("user@example.com")
                .id("user_123")
                .build()
);

var subscription = commet.subscriptions().create(
        CreateSubscriptionParams.builder("user_123")
                .planCode("pro")
                .build()
);

String checkoutUrl = subscription.checkoutUrl();

build.gradle.kts

implementation("co.commet:commet-java:8.0.0")

implementation("co.commet:commet-java:8.0.0")

Install in seconds

Install the Commet Java SDK and start billing. Subscriptions, usage tracking, and checkout with Maven or Gradle.

Get started Documentation

Frequently Asked Questions

Install the Commet SDK, add your API key, and start billing. Follow the Java integration guide for a step-by-step walkthrough with code examples.

Commet supports metered (pay for what you use), credits (block when exhausted), balance (spend across features), seats (per-user pricing), and boolean (feature gating). Learn more in the consumption models guide.

Yes. Call the usage tracking method whenever a billable event happens. Commet aggregates usage and bills it at the end of each billing period. Works for API calls, AI tokens, storage, or any custom metric. See the usage tracking guide for details.

Yes. Commet has a built-in AI model catalog with per-token pricing. You can track input, output, and cache tokens with configurable margins. See the AI token billing guide for setup instructions.

Yes. Commet is a Merchant of Record that handles taxes, compliance, refunds, and payouts. Stripe Tax is integrated for automatic tax calculation. Read more about the Merchant of Record model.

Commet has no setup fees and no monthly minimums. You only pay 5% + $0.40 per successful transaction. You can start building and testing for free using the sandbox environment. See pricing for details.

Commet works with every framework

Pick your stack — the SDK is the same everywhere. Subscriptions, usage tracking, and checkout work the same across Node, Python, Go, Java, and PHP.

import co.commet.Commet;

import co.commet.params.CreateCustomerParams;

import co.commet.params.CreateSubscriptionParams;

Commet commet = Commet.builder()

.apiKey(System.getenv("COMMET_API_KEY"))

.build();

commet.customers().create(

CreateCustomerParams.builder("user@example.com")

.id("user_123")

.build()

);

var subscription = commet.subscriptions().create(

CreateSubscriptionParams.builder("user_123")

.planCode("pro")

.build()

);

String checkoutUrl = subscription.checkoutUrl();

import co.commet.Commet;

import co.commet.params.CreateCustomerParams;

import co.commet.params.CreateSubscriptionParams;

Commet commet = Commet.builder()

.apiKey(System.getenv("COMMET_API_KEY"))

.build();

commet.customers().create(

CreateCustomerParams.builder("user@example.com")

.id("user_123")

.build()

);

var subscription = commet.subscriptions().create(

CreateSubscriptionParams.builder("user_123")

.planCode("pro")

.build()

);

String checkoutUrl = subscription.checkoutUrl();

Frequently Asked Questions

Install the Commet SDK, add your API key, and start billing. Follow the Java integration guide for a step-by-step walkthrough with code examples.

Yes. Commet has a built-in AI model catalog with per-token pricing. You can track input, output, and cache tokens with configurable margins. See the AI token billing guide for setup instructions.

Yes. Commet is a Merchant of Record that handles taxes, compliance, refunds, and payouts. Stripe Tax is integrated for automatic tax calculation. Read more about the Merchant of Record model.

Add billing with Java

Billing that fits your stack

Install in seconds

Frequently Asked Questions

How do I add billing to my Java app?

What billing models does Commet support?

Can I track usage in my Java app?

Can I use Commet for AI token billing?

Does Commet handle taxes and compliance?

How much does Commet cost?

Commet works with every framework

Add billing with Java

Billing that fits your stack

Install in seconds

Frequently Asked Questions

How do I add billing to my Java app?

What billing models does Commet support?

Can I track usage in my Java app?

Can I use Commet for AI token billing?

Does Commet handle taxes and compliance?

How much does Commet cost?

Commet works with every framework