pip install nex-sovereign-sdk

Give your softwareemotional intelligence.

One API call processes any text into 18 distinct emotions with intensity, decay, and blending — in real-time.

Get API KeySee Documentation
classify.py
from nex_sdk import NexClient
 
nex = NexClient(api_key="nex_sk_...")
result = nex.heart.classify("user_42", "I'm thrilled about this breakthrough!")
200 OK18 emotions classified in 47ms
{
"primary_emotion": "happiness",
"intensity": 0.91,
"valence": 0.88,
"arousal": 0.76,
"emotion_vector": {
"happiness": 0.91, "trust": 0.72, "hope": 0.62,
"surprise": 0.54, "curiosity": 0.45, "anticipation": 0.45,
"pride": 0.38, "awe": 0.33, // ... 10 more
}
}
2 Published Books on AI Consciousness
Provisional Patent — HEART Engine
18-Dimension Emotion Model
Production API — pip install nex-sovereign-sdk

Three steps to emotional AI

From install to production in minutes, not months.

1

Install the SDK

pip install nex-sovereign-sdk

npm install @nex_sovereign/sdk

2

Classify any text

nex.heart.classify("user", text)

Returns 18-dim emotion vector

3

Build with emotions

Therapy bots, adaptive learning, sentiment beyond positive/negative

Built for products that need to understand people

Every industry that touches human emotion is underserved by binary sentiment analysis.

Mental Health

Real-time emotional state tracking for therapy platforms. 18 emotions instead of binary sentiment — detect nuanced states like hope fading into frustration with underlying fear.

18 emotions vs positive/negative

EdTech

Student engagement monitoring and adaptive content delivery. Detect confusion, frustration, or curiosity in real-time and adjust learning paths automatically.

Adaptive learning via EduPulse

AI Agents

Give your AI emotional memory and contextual awareness. HEART + PDAR reasoning + Memory Graph = agents that understand how users feel and remember why.

HEART + PDAR + Memory Graph
HEART Engine v4

This is not sentiment analysis.

Sentiment analysis gives you positive, negative, or neutral. HEART gives you 18 distinct emotions with intensity, decay curves, blending, and conflict resolution — modeled after cognitive science.

// Sentiment analysis:

{ sentiment: "positive", score: 0.78 }

// HEART Engine:

{ happiness: 0.87 decaying into anticipation: 0.45

with underlying trust: 0.72 }

18
Dimensions
<50ms
Classification
Real
Decay + Blending

Classify is just the entry point

The full cognitive OS powers autonomous emotional agents with reasoning, memory, beliefs, and governance.

INPUT
Text / Speech
ENGINE
HEART v4
OUTPUT
18-Dim Emotion Vector

PDAR Reasoning

Perceive → Decide → Act → Reflect. Transparent, auditable decision-making.

Memory Graph

Persistent semantic memory with emotionally-biased retrieval across sessions.

Belief Engine

Conflict resolution and safety gating for belief formation and updates.

Executive Engine

Autonomous cognitive cycles — goal prioritization and event-driven triggers.

Simple, transparent pricing

Start free. Scale when you're ready.

Free

$0

Start building with emotional AI today.

  • 1,000 classify calls/month
  • 1 API key
  • 18-emotion vector response
  • Community support
Start Free
MOST POPULAR

Growth

$49/mo

For products going to production.

  • 50,000 calls/month
  • 5 API keys
  • Webhooks & streaming
  • Priority support
  • Usage analytics dashboard
Get Growth

Enterprise

Custom

For teams that need SLAs and scale.

  • Custom call volume
  • Unlimited API keys
  • 99.9% SLA
  • Dedicated support engineer
  • Custom integrations
  • On-premise option
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Ready to add emotional intelligence?

Free tier. No credit card. Start classifying emotions in 60 seconds.

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