# Page Not Found

The URL `how-to-guide/integration/add-custom-fields-to-a-jwt-access-token` does not exist.

You might be looking for one of these pages:
- [Add custom fields to a JWT Access Token or ID Token](https://docs.authgear.com/integration/add-custom-fields-to-a-jwt-access-token.md)
- [JWT Access Token](https://docs.authgear.com/reference/tokens/jwt-access-token.md)
- [Add authentication to any web page](https://docs.authgear.com/authentication-and-access/authentication/add-authentication-to-any-web-page.md)
- [Add Email Magic Link Login](https://docs.authgear.com/authentication-and-access/authentication/add-email-magic-link-login.md)
- [Add Custom Login/Signup UI to Native Apps](https://docs.authgear.com/customization/custom-ui/add-custom-login-signup-ui-to-native-apps.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/integration/add-custom-fields-to-a-jwt-access-token.md`)
- Use `Accept: text/markdown` header for content negotiation