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Metrics are published to standard formats (Prometheus, CloudWatch, DataDog) with zero configuration.

The SDK provides both callback-based and Promise-based APIs, so you can use it with callbacks, async/await, or Observables.

const stream = new RelayKit( apiKey: process.env.API_KEY, region: 'us-east-1' );

Each event flows through a series of transformation stages, with built-in support for filtering, mapping, and conditional routing.

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Each event flows through a series of transformation stages, with built-in support for filtering, mapping, and conditional routing.

const throttled = stream.throttle( rps: 100, burst: 200 ); const deduplicated = stream.dedup( key: 'event.id', window: 60000 );

Graceful shutdown waits for in-flight events to complete, then closes connections cleanly—no lost events, no crashes.