Chapter 13
Build on HALO
Developer Platform
Cognitive context as a first-class API. Build adaptive, human-aware applications with HALO's ethics-first SDK across every major platform.

Python
pip install halo-sdkJavaScript
npm install @halo/sdkSwift
pod 'HaloSDK'Kotlin
implementation("ai.halo:sdk:1.0.0")Quickstart
Stream cognitive state in five lines
from halo import Halo
halo = Halo(api_key="sk_live_...")
# Subscribe to the live cognitive-state stream
for state in halo.stream():
print(state.harmonic_index, state.focus, state.confidence)API reference
A small, focused surface
GET
/v1/state/liveStream real-time cognitive state via SSE.GET
/v1/sessions/{id}Retrieve a recorded session with features.GET
/v1/harmonic-indexCurrent Harmonic Index with confidence bounds.POST
/v1/feedbackTrigger an adaptive neurofeedback cue.