Revenue infrastructure for API and AI SaaS
Stop Losing Revenue to Broken Usage Tracking and Billing Drift
Usagey tracks billable events, enforces plan limits, and powers usage-based billing so your product charges correctly from day one.
Track billable events accurately
Enforce limits before abuse grows
Live in minutes
$npm install usagey
Everything you need to run usage-based revenue
Meter usage, control access, monitor limits, and support billing workflows without stitching together fragile custom logic.
Accurate Event Metering
Record billable usage with the metadata you need to understand what happened, for whom, and why it matters.
- Track API calls, credits, and custom events
- Attach customer and plan metadata
- Use the REST API or Node SDK
- Deduplicate events with event IDs
Access and Key Management
Control who can send usage events and manage credentials without turning auth into a spreadsheet problem.
- Create scoped API keys
- Rotate existing keys quickly
- Set expiration dates
- Manage keys by organization
Live Usage Visibility
See current consumption, monitor plan limits, and catch revenue leakage before billing turns into support debt.
- Track live consumption
- Monitor plan limits
- See usage percentages
- Filter by event type
Developer-First Integration
Ship faster with a TypeScript-first SDK, clear error handling, and an API surface built for product teams.
- Full TypeScript support
- Clear error responses
- Promise-based API
- Practical docs and examples
Launch in Minutes
Go from signup to first billable event without spending weeks building metering and billing infrastructure.
- npm install usagey
- Fast setup flow
- Working examples
- Step-by-step getting started guide
Reliable Billing Infrastructure
Treat usage data like revenue data with authenticated ingestion, validation, and failure handling built in.
- Authenticated event ingestion
- Rate-limit aware requests
- Strict validation responses
- Retry support for failed sends
Start free. Charge correctly as you grow.
Choose the stage that matches your product today, then move up when usage becomes real revenue infrastructure.
Need more event volume, custom workflows, or help migrating from a DIY billing stack?
Frequently Asked Questions
The practical details founders ask before trusting usage data with billing decisions
Built for teams monetizing real usage
Usagey helps SaaS founders turn product usage into limits, analytics, and billing workflows without building the whole stack themselves.