> For the complete documentation index, see [llms.txt](https://docs.emsigner.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emsigner.com/apis/signer-gateway/getting-started.md).

# Getting Started

- [Key Concepts](https://docs.emsigner.com/apis/signer-gateway/getting-started/key-concepts.md)
- [Subscription](https://docs.emsigner.com/apis/signer-gateway/getting-started/subscription.md)
- [Setting It Up](https://docs.emsigner.com/apis/signer-gateway/getting-started/setting-it-up.md)
- [Sandbox and Going LIVE](https://docs.emsigner.com/apis/signer-gateway/getting-started/sandbox-and-going-live.md)