PixelKit

Install

npx expo install @pixelkit-labs/sdk @pixelkit-labs/native

# on-device ML, opt-in: adds 19 ML Kit artifacts to your APK
npx expo install @pixelkit-labs/mlkit

Android, and a development build

The hooks talk to Kotlin native modules that have to be compiled into your app, so this cannot run in Expo Go. Build it onto the device with npx expo run:android — one command, a few minutes the first time. On other platforms every native-backed hook reportsunavailable.

Use it

import { useCPU, useSensors, useBiometrics } from '@pixelkit-labs/sdk';
import { useGeminiNano } from '@pixelkit-labs/sdk/mlkit';

function Readout() {
  const cpu = useCPU();
  const { pressure } = useSensors();

  return (
    <>
      <Text>{cpu.cores[0]?.curMHz ?? '—'} MHz</Text>
      <Text>{pressure ?? '—'} hPa</Text>
    </>
  );
}

What you can read

Area	Hooks
Silicon & compute	useADPFuseADPFHintSessionuseBatteryShareuseChargingIntelligenceuseCPUuseGPUuseMemoryusePerfettouseTPU
System & media	useAudiouseCapabilitiesuseCellularuseDeviceuseDisplayuseMediaLibraryuseNetworkuseSpatialAudiouseVideo
Sensors & actuators	useAltimeteruseCamerauseCameraExtensionsuseHapticsuseHealthConnectuseMicrophoneArrayuseSensorsuseThermometeruseTorch
Radios & security	useBiometricsuseBLEuseChannelSoundinguseKeyAgreementuseLocationuseNFCusePlayIntegrityusePrivateSpaceuseRadiosuseSatelliteNTNuseSecurityuseWifi7MLOuseWifiRTT
AI	useAppFunctionsuseEmbeddingsuseGeminiuseGeminiNanouseGenAITasksuseNaturalLanguageAIuseSpeechuseSpeechAIuseVisionAI
Pixel Pro	useHiLightuseUWB

All 51 hooks are documented with their arguments, every field they return with the type it really has, and a contract for each function they expose.

Where to go

QuickstartInstall, build onto a device, and read your first value.

API referenceEvery hook: inputs, outputs, and what failure looks like.

GuidesOn-device Gemini Nano, function calling, and voice.

ArchitectureHow the hooks reach the hardware, layer by layer.

Built from the template? It is a working four-tab app that exercises the hooks on a real device. Something reading— and you are not sure why? npx @pixelkit-labs/cli doctor says which of adb, the device, the development build or AICore is missing.