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

# Developer SDK

Use the Developer SDK section when your backend keeps the API key and prepares
wallet actions for the client to sign.

Start there for:

* wallet creation
* transfers and swaps
* recovery setup and runtime flows
* sponsor and paymaster-backed submission

<Card title="Open Developer SDK Docs" icon="building" href="/developer-sdk">
  Go to the full Developer SDK documentation
</Card>