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Track every billable event in real time

Capture product usage through the SDK and connect every event to the features and plans you sell.

Track your first eventRead the docs

One SDK call

Track any billable user action.

Real time

See usage as soon as it happens.

Idempotent

Retry safely without counting twice.

From product action to billable usage

Create a reliable stream of usage data and turn it into the foundation of your pricing.

Capture any product action

Track API calls, tokens, storage, agent runs, or any custom event with a feature code and value.

Learn more
Commet events table beside a TypeScript snippet tracking a usage event through the SDKCommet events table beside a TypeScript snippet tracking a usage event through the SDK

Organize events as product features

Group events into the usage, seat, quota, and access features that define what your product sells.

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Commet features table listing each feature with its type, code, and unitCommet features table listing each feature with its type, code, and unit

Turn usage into billing

Attach features to plans and use each tracked unit to calculate consumption, limits, and charges.

Learn more
Commet plan screen showing metered and boolean features with what a Premium plan includesCommet plan screen showing metered and boolean features with what a Premium plan includes
Commet usage events table showing event types, customers, and timestamps

Every usage event, in one place

Inspect the event type, customer, and timestamp behind every unit of usage.

Frequently asked questions

Track your first event

Start tracking usageRead the docs

Accept global payments, handle usage-based pricing, subscriptions, and seats — without building your own infrastructure.

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