Download backup files
Backup files are downloaded over HTTPS, not through an API endpoint. Sign in with the username and password of the index, the ones in its Security tab.
https://backup.opensolr.com/INDEX_NAME/https://backup.opensolr.com/INDEX_NAME/FILE_NAME01 · Find the file name
Call get_backup_files_list, or open the folder of the index in a browser: it lists every backup file.
02 · Example
curl -u "INDEX_USERNAME:INDEX_PASSWORD" -o my_index_10_11_2026-02.00.09.tar \ "https://backup.opensolr.com/my_index/my_index_10_11_2026-02.00.09.tar"
A new index starts with the username opensolr and your master API key as its password. If you changed them, use the new ones.
03 · Related
Make a backup: create_backup. Restore one: restore_backup.
How long backup files are kept, and the steps in the Control Panel: Download backup files.