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

# API Overview

> Complete API reference for the Joyfill iOS SDK modules

# iOS API Reference

Comprehensive documentation for Joyfill iOS SDK with cross-module references.

## iOS SDK Modules

<CardGroup cols={2}>
  <Card title="📱 Joyfill" icon="mobile" href="https://joyfill.github.io/api-references/ios/Joyfill/documentation/joyfill">
    Main Joyfill SDK with UI components, views, and core functionality for building form-based applications.
  </Card>

  <Card title="🌐 JoyfillAPIService" icon="globe" href="https://joyfill.github.io/api-references/ios/JoyfillAPIService/documentation/joyfillapiservice">
    API service layer for communicating with Joyfill backend services and managing network requests.
  </Card>

  <Card title="🧮 JoyfillFormulas" icon="calculator" href="https://joyfill.github.io/api-references/ios/JoyfillFormulas/documentation/joyfillformulas">
    Formula engine and calculation utilities for dynamic form field computations and expressions.
  </Card>

  <Card title="📦 JoyfillModel" icon="box" href="https://joyfill.github.io/api-references/ios/JoyfillModel/documentation/joyfillmodel">
    Data models, schemas, and structures representing forms, fields, and document definitions.
  </Card>
</CardGroup>

## Quick Links

* [**Full iOS API Reference**](https://joyfill.github.io/api-references/ios/) - Complete SwiftDoc documentation with all modules
* [**Getting Started Guide**](/ios/getting-started) - Setup and installation instructions
* [**iOS Guides**](/ios/guides/modes) - Integration guides and tutorials

## Module Overview

### 📱 Joyfill Module

The main SDK module containing:

* **JoyfillFormView** - Primary form rendering component
* **JoyfillFormConfig** - Configuration objects for form initialization
* **Form Delegates** - Event handling protocols
* **UI Components** - Built-in form field components

[View Joyfill Module Documentation →](https://joyfill.github.io/api-references/ios/Joyfill/documentation/joyfill)

### 🌐 JoyfillAPIService Module

The API service module providing:

* **Network Layer** - HTTP client for Joyfill API
* **Authentication** - Token management and authentication flows
* **API Endpoints** - Methods for documents, templates, and users
* **Request/Response Models** - Type-safe API models

[View JoyfillAPIService Documentation →](https://joyfill.github.io/api-references/ios/JoyfillAPIService/documentation/joyfillapiservice)

### 🧮 JoyfillFormulas Module

The formula engine module featuring:

* **Formula Parser** - Parse and evaluate form formulas
* **Calculation Engine** - Dynamic field calculations
* **Expression Evaluator** - Support for complex expressions
* **Built-in Functions** - Math, string, and date functions

[View JoyfillFormulas Documentation →](https://joyfill.github.io/api-references/ios/JoyfillFormulas/documentation/joyfillformulas)

### 📦 JoyfillModel Module

The data models module including:

* **JoyDoc Schema** - Document and template structures
* **Field Models** - All form field type definitions
* **Validation Models** - Validation rules and constraints
* **Type Definitions** - Shared types and enums

[View JoyfillModel Documentation →](https://joyfill.github.io/api-references/ios/JoyfillModel/documentation/joyfillmodel)

## Documentation Format

The iOS SDK documentation is generated using **Swift-DocC** (Swift Documentation Compiler), providing:

* ✅ Type-safe API documentation
* ✅ Interactive code examples
* ✅ Cross-module references
* ✅ Search functionality
* ✅ Dark/light mode support

## Additional Resources

<CardGroup cols={2}>
  <Card title="Getting Started" icon="rocket" href="/ios/getting-started">
    Installation and setup guide
  </Card>

  <Card title="Event Handling" icon="bolt" href="/ios/guides/event-handling">
    Handle form events and callbacks
  </Card>

  <Card title="Release Notes" icon="note" href="/ios/changelogs/RELEASE_NOTES">
    Latest updates and changes
  </Card>

  <Card title="Security" icon="shield" href="/ios/about/security">
    Security best practices
  </Card>
</CardGroup>