I’ve asked this in the Octopus Agile app thread, this data is currently not available to rest of emonCMS. 
I’ve gotten around it, but for you, it may be a very very long winded way:
- I’ve got Home Assistant for my home automation, this guide shows how to set up Agile pricing sensor
- Use emonCMS history integration to feed data into emonCMS as Input
After you’ve set up Home Assistant, you can easily set up a prettier dashboard 