API for GraphQL Saved Credentials

Hi clearyj3 

According to the following documentation, currently Service Principals do not support saved credentials. 

Connect applications to Fabric API for GraphQL - Microsoft Fabric | Microsoft Learn

Create and add data to an API for GraphQL - Microsoft Fabric | Microsoft Learn

Best Regards,
Jing
Community Support Team

Hi clearyj3 

Based on my testing, below code should work in a Fabric notebook. It uses Service principal with SSO. 

import requests
import json

# Client Application information
client_id = "app client id"
client_secret = "app client secret"
tenant_id = "your tenant id"

# Get token for service principal
url = f"https://login.microsoftonline.com/{tenant_id}/oauth2/v2.0/token"

payload = f'grant_type=client_credentials&client_id={client_id}&client_secret={client_secret}&scope=https%3A%2F%2Fapi.fabric.microsoft.com%2F.default'

headers = {
  'Content-Type': 'application/x-www-form-urlencoded'
}

response = requests.request("POST", url, headers=headers, data=payload)

if response.status_code == 200:
    # Parsing the JSON response
    json_response = response.json()
    # Extracting the token
    token = "Bearer " + json_response.get('access_token')
    print("Access token retrieved!")
else:
    print(f'Failed to get a response, status code: {response.status_code}')


# Use the token to make a POST request to the GraphQL API
workspace_id = "your workspace id"
graphql_api_id = "your graphql api item id"
api_endpoint = f"https://api.fabric.microsoft.com/v1/workspaces/{workspace_id}/graphqlapis/{graphql_api_id}/graphql"

graphql_query = json.dumps({
  "query": "{ customers { items { Id CustomerId Name } } }" # replace the query with your graphql query
})

query_headers = {
  'Content-Type': 'application/json',
  'Authorization': token
}

result = requests.request("POST", api_endpoint, headers=query_headers, data=graphql_query)

print(result.text)

This is my testing result:

To authenticate with a service principal, I create an application in Microsoft Entra ID and give it Power BI Service Item.Execute.All permission. Create a client secret and use it for retrieving the access token. No other setup is required in Azure portal. Then I add the service principal as a Contributor member of the workspace to ensure that it has access to the GraphQL API and the underlying data source. 

Hope this would be helpful. 

References:

Create and add data to an API for GraphQL - Microsoft Fabric | Microsoft Learn

Connect applications to Fabric API for GraphQL - Microsoft Fabric | Microsoft Learn

Best Regards,
Jing
If this post helps, please Accept it as Solution to help other members find it. Appreciate your Kudos!