# Page Not Found

The URL `ref:authentication-basics` does not exist.

You might be looking for one of these pages:
- [Community libraries](https://docs.ecwid.com/develop-apps/community-libraries.md)
- [FAQ about public applications](https://docs.ecwid.com/launch-apps/faq-about-public-applications.md)
- [Build with Ecwid apps](https://docs.ecwid.com/build-with-ecwid-apps.md)
- [Contact Ecwid API support team](https://docs.ecwid.com/contact-ecwid-api-support-team.md)
- [Private and public Ecwid apps](https://docs.ecwid.com/develop-apps/private-and-public-ecwid-apps.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.ecwid.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.ecwid.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/develop-apps/community-libraries.md`)
- Use `Accept: text/markdown` header for content negotiation