OAuth Client 400 Error

lmcnicol — Thu, 21 Aug 2025 06:32:23 GMT

Hi,

I am trying to use an OAuth client in Python

The following cURL command works:

curl --location --request POST 'https://sso.dynatrace.com/sso/oauth2/token' -- header 'Content-Type: application/x-www-form-urlencoded' --data-urlencode 'grant_type=client_credentials' --data-ur lencode 'client_id=dt0s02.<ID>' --data-urlencode 'client_secret=dt0s02.<SECRET>' --data-urlencode 'resource=urn:dtaccount:<ACCOUNT>' - -data-urlencode 'scope=<POLICIES SPACE SEPARATED>'

However, the following Python POST request gives me a 400 error.

headers = { "Content-Type": "application/x-www-form-urlencoded" } data = { "grant_type": "client_credentials", "client_id": client_id, "client_secret": client_secret, "scope": scope, "resource": resource } encoded_data = urlencode(data) print(encoded_data) bearer_token = requests.post(oauth_api_url, data=encoded_data, headers=headers, verify=False) print(bearer_token)

Variables are all defined correctly same as values used in cURL command.

Can anyone see where I'm going wrong?
Thanks.

Re: OAuth Client 400 Error

Julius_Loman — Wed, 20 Aug 2025 06:56:37 GMT

Probably you should not urlencode the data, but just send it. The HTTP/400 is common when the policies are incorrectly specified, which might be a result of the URL encoding when it is not needed.

Re: OAuth Client 400 Error

lmcnicol — Wed, 20 Aug 2025 07:04:16 GMT

Turns out my ENV variable for the scope had an extra space hiding in the middle of one of the scopes
Feel very silly now 😆
Thanks for your response, yes I've also removed the unnecessary encoding.

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OAuth Client 400 Error

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