Making a request to Dynamics CRM Web API - python

I'm trying to make an app that makes requests to Dynamics CRM Web API from python using urllib2.
So far I can login an user with an Azure application by making a post request to https://login.microsoftonline.com/common/oauth2/authorize
then with the retrieved authorization_code I can get the access_token, refresh_token and others with urllib2
url = 'https://login.microsoftonline.com/common/oauth2/token'
post_fields = {'grant_type': 'authorization_code',
'client_id': CLIENT_ID,
'client_secret': CLIENT_SECRET,
'redirect_uri': REDIRECT_URI,
'resource': 'https://graph.microsoft.com',
'code': code}
request = Request(url, urlencode(post_fields).encode())
resp = urlopen(request).read().decode()
resp = json.loads(resp)
refresh_token = resp['refresh_token']
id_token = resp['id_token']
id_token = jwt.decode(id_token,verify=False)
access_token = resp['access_token']
Then I tried to make another post request by using the access_token but had no luck.
I keep getting:
HTTP Error 401: Unauthorized
Just as a test I make a post directly to .dynamics.com/api/data/v8.1/leads
as follows:
url = 'https://<company_uri>.dynamics.com/api/data/v8.1/leads'
post_fields = {"name": "Sample Account",
"creditonhold": "false",
"address1_latitude": 47.639583,
"description": "This is the description of the sample account",
"revenue": 5000000,
"accountcategorycode": 1
}
request = Request(url, urlencode(post_fields).encode())
request.add_header('Authorization', 'Bearer ' + access_token )
request.add_header("Content-Type", "application/json; charset=utf-8")
request.add_header('OData-MaxVersion','4.0')
request.add_header('OData-Version','4.0')
request.add_header('Accept','application/json')
resp = urlopen(request).read().decode()
But i keep getting the same 401 error code.
I've looked all over msdn documentation but didn't find the way to do this directly without using any library, I just want to use a simple post request.
Since the error code says Unauthorized I think the access_token must be sent in some other way.
Can someone help me on how to correctly use the access_token on Dynamics CRM?
Thanks!

The access token you got back is for the Azure AD Graph API. Not Dynamics CRM.
To call that, you must ask for an access token with resource set to Dynamics CRM API's App ID URI, not https://graph.windows.net.
According to documentation you should set resource to https://<company_uri>.crm.dynamics.com.
So when you are retrieving token:
url = 'https://login.microsoftonline.com/common/oauth2/token'
post_fields = {'grant_type': 'authorization_code',
'client_id': CLIENT_ID,
'client_secret': CLIENT_SECRET,
'redirect_uri': REDIRECT_URI,
'resource': 'https://<company_uri>.crm.dynamics.com',
'code': code}

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I checked if my client_id and client_secret, everything seems fine. Also I have premium account.
import requests
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Several authorization flows are detailed in their documentation but your request doesn't match any of them. If I understand correctly your app is just a server-side code without any frontend which means that the Client Credentials Flow is the one that best matches your need. In this flow you don't need to send the client ID and secret in the request body instead, you need to send them in the Authorization header in the following format: Basic <base64 encoded client_id:client_secret>.
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Screenshot of an error message
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secret_key_client = '***'
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code = "***"
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data={
'code': code,
'redirect_uri': redirect_uri,
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Python example below (problem is actually language independent):
import requests
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from facebookads.adobjects.adaccount import AdAccount
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from facebookads.adobjects.adset import AdSet
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account_id = 'xxxx'
def get_fb_token(app_id, app_secret):
payload = {'grant_type': 'client_credentials',
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Try this:
payload = {
'grant_type': 'client_credentials',
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'client_secret': app_secret,
'scope': 'ads_read'
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I am writing a command line script accessing LinkedIN API via Library but having issues with it. Here is my code:
from linkedin import linkedin
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Any further concern, please feel free to let me know.

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