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

# Form Filling SDK API Reference

> Overview of Form filling SDK API reference pages

This section documents the Form filling SDK APIs for JavaScript and React integrations.

Refer to the cards below for constructor and `start()` options, React bindings, events, error codes, and result payloads.

<CardGroup cols={2}>
  <Card title="FormFillingClient" icon="cube" href="/form-filling-sdk/api-reference/form-filling-client" arrow={true}>
    Create the client, start a session, and use the React provider and components to open Form filling in your app.
  </Card>

  <Card title="Events" icon="bolt" href="/form-filling-sdk/api-reference/events" arrow={true}>
    Listen for session lifecycle changes, handle errors, and read the structured data your app receives after processing.
  </Card>
</CardGroup>