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Helper I
Helper I

CDM API Access

Hello all


Is it possible to access a Common Data Model via an API?


We would like to automate uploading information to our database from external sources to be used by a PowerApps app.





Kudo Kingpin
Kudo Kingpin

You can use Flow to do that, see

Dean Gross

Office 365- MSCA
SharePoint - MCSE
Microsoft 365 Enterprise Administrator Expert

@DLGross unfortunately that wont work for us as we need to be able to check existing records before adding new ones.


You may be able to use a Custom flow (to do this use Create from Blank) with a Condition to evaluate the existing data. Depending on the result you could then add the new data

Dean Gross

Office 365- MSCA
SharePoint - MCSE
Microsoft 365 Enterprise Administrator Expert

I've had a look, and dont think I can do what I need with that.


Also there is the issue of error handling - there would be no feedback to the trigger if something went wrong.


we're working with thousands of records per day so there an't be any manual processes.


Surely there must be some type of web API, as the excel add-in must use it to refresh and publish?

Fired up Fiddler to see if I can reverse engineer it.


Looks like it used odata specification. 


You need a JSON web token to authenticate. See here:


Will keep trying.

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