> For the complete documentation index, see [llms.txt](https://developers.gleantap.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.gleantap.com/update-data.md).

# Update Data

- [Create or Update Location](https://developers.gleantap.com/update-data/create-or-update-location.md)
- [Create a Class](https://developers.gleantap.com/update-data/create-a-class.md)
- [Delete Class](https://developers.gleantap.com/update-data/delete-class.md)
- [Create or Update Contact](https://developers.gleantap.com/update-data/create-or-update-contact.md)
- [SMS Opt-in a Contact](https://developers.gleantap.com/update-data/sms-opt-in-a-contact.md)
- [Add Memberships for Contact](https://developers.gleantap.com/update-data/add-memberships-for-contact.md)
- [Create an Event](https://developers.gleantap.com/update-data/create-an-event.md)
- [Delete Contact](https://developers.gleantap.com/update-data/delete-contact.md)
- [Merge Contacts](https://developers.gleantap.com/update-data/merge-contacts.md)
- [Send SMS Notification](https://developers.gleantap.com/update-data/send-sms-notification.md)
- [Send Email Notifications](https://developers.gleantap.com/update-data/send-email-notifications.md)