Blendr.io uses the Salesforce REST API to access Salesforce. API access is included in following Salesforce editions:

  • Enterprise Edition
  • Unlimited Edition
  • Developer Edition
  • Performance Edition

API access is not included in following versions:

  • Professional Edition: API access can be purchased from Salesforce
  • Essential Edition

More info:
https://help.salesforce.com/articleView?id=000326486&type=1&mode=1

You can sign up for a Developer edition free trial here:
https://developer.salesforce.com/signup 

To find your current edition, in Salesforce go to Setup > Company information.

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