> For the complete documentation index, see [llms.txt](https://www.happ.su/main/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.happ.su/main/dev-docs.md).

# Developer Documentation

- [Crypto link](https://www.happ.su/main/dev-docs/crypto-link.md)
- [Limited Links](https://www.happ.su/main/dev-docs/limited-links.md)
- [HWID Links](https://www.happ.su/main/dev-docs/hwid-links.md)
- [App management](https://www.happ.su/main/dev-docs/app-management.md): Manage application settings through the subscription
- [Provider ID](https://www.happ.su/main/dev-docs/provider-id.md)
- [Routing](https://www.happ.su/main/dev-docs/routing.md)
- [Displaying flags and smileys](https://www.happ.su/main/dev-docs/emoji.md)
- [Examples of links and parameters](https://www.happ.su/main/dev-docs/examples-of-links-and-parameters.md): This document contains a description of supported protocols, methods for adding them, and detailed instructions for configuring connection parameters.
- [Ping](https://www.happ.su/main/dev-docs/ping.md)
- [Android TV API](https://www.happ.su/main/dev-docs/android-tv-api.md)