> ## 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 API

Use Developer API when you want direct REST access to Swig's hosted backend
runtime surfaces instead of going through SDK helpers.

Start there for:

* preparing wallet transactions through REST
* sponsoring or signing transactions with a paymaster
* reading wallet balances, roles, and token history
* starting identity login, OTP, passkey, invite, and role flows
* creating ramp quotes and sessions

<Card title="Open Developer API Docs" icon="code" href="/developer-api">
  Go to the REST API documentation
</Card>