> ## Documentation Index
> Fetch the complete documentation index at: https://docs.heychocolate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Core Concepts

> Understand the building blocks of the Hey Chocolate Sustainability Intelligence Engine.

The Hey Chocolate API is built around a set of core modules that work together to transform raw sustainability data into actionable commercial intelligence.

## The Intelligence Pipeline

```
Raw Data (LCA, EPD, MKI)
    ↓
┌─────────────────────────────────────┐
│         Calculation Hub             │
│  CO2 equivalents · MKI scores       │
└──────────────┬──────────────────────┘
               ↓
┌──────────────┴──────────────────────┐
│     Scenario       Equivalency      │
│     Simulator      Engine           │
│  What-if analysis  Human language   │
└──────────────┬──────────────────────┘
               ↓
┌──────────────┴──────────────────────┐
│  Comparisons · Search · Gamification │
│  Supply Chain · Print Export         │
└──────────────┬──────────────────────┘
               ↓
┌──────────────┴──────────────────────┐
│      Visualisation Engine           │
│  Lottie · Video · 3D · Web         │
└─────────────────────────────────────┘
```

## Modules at a glance

<CardGroup cols={2}>
  <Card title="Calculators" icon="calculator" href="/core-concepts/calculators">
    Real-time impact calculations (CO2, MKI) from product and transaction data.
  </Card>

  <Card title="Scenario Simulator" icon="flask" href="/core-concepts/scenario-simulator">
    What-if analysis: swap materials, transport, or energy sources and see the impact change.
  </Card>

  <Card title="Equivalency Engine" icon="scale-balanced" href="/core-concepts/equivalency-engine">
    Translate abstract scores into human-understandable comparisons.
  </Card>

  <Card title="Comparisons" icon="code-compare" href="/core-concepts/comparisons">
    Side-by-side product or scenario comparisons on sustainability parameters.
  </Card>

  <Card title="Supply Chain" icon="link" href="/core-concepts/supply-chain">
    Visual supply chain hierarchy from Tier 1 to Tier N.
  </Card>

  <Card title="Search" icon="magnifying-glass" href="/core-concepts/search">
    Search across products and sustainability data by sector, score, and more.
  </Card>

  <Card title="Gamification" icon="trophy" href="/core-concepts/gamification">
    Impact badges, milestones, and engagement hooks.
  </Card>

  <Card title="Print Export" icon="print" href="/core-concepts/print-export">
    Export data and labels for physical packaging and print media.
  </Card>
</CardGroup>