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

# Developers

> Build apps and use the API.

> Apps
> Extend Upshift with custom objects, server-side logic, UI components, and AI agents — all as TypeScript packages.
>
> [Open](https://docs.upshiftcloud.com/en/developers/extend/apps/getting-started/quick-start.md)

> API
> REST and GraphQL APIs, webhooks, and OAuth.
>
> [Open](https://docs.upshiftcloud.com/en/developers/extend/api.md)


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