> For the complete documentation index, see [llms.txt](https://docs.0xpass.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.0xpass.io/wallet-operations/passkeys-signer/sign-transaction.md).

# Sign Transaction

In this section, you will find comprehensive guides to implementing transaction signing using our SDK and API:

* [**Sign Transaction SDK**](/wallet-operations/passkeys-signer/sign-transaction/sign-transaction-sdk.md): Get started with our SDK  to integrate message signing into your application. The SDK flow abstracts away most interactions, making it the easiest way to get started
* [**Sign Transaction API**](/wallet-operations/passkeys-signer/sign-transaction/sign-transaction-api.md): If you're not using TypeScript or prefer to use an API, you can directly make HTTP requests to sign messages.