Yes, Terra does support historical backfills. To perform this, you would need to make a http request to our REST api (to the endopoint for the data type you wish to retrieve), for example:

import requests

api_key = '<YOUR-API-KEY>'
dev_id = '<YOUR-DEV-ID>'

requests.get(
    'https://api.tryterra.co/v2/daily',
    params={
        'start_date': '2022-01-01',
        'end_date': '2024-04-01',
        'user_id': '<USER-ID>',
        'to_webhook': 'true'  
    },
    headers={'x-api-key': api_key, 'dev-id': dev_id}
)

This will request and send the data to your webhook in chunks This method requires a webhook (or other destination) to be configured as the response may be too big for a HTTP request. Whilst this is feasible, it is not advised practice as this will slow down delivery of events to your webhook. Some providers do not allow historical backfill past a certain point (Polar, Garmin, Samsung) and other have strict ratelimits which will result in a longer period before the request is fulfilled.