HTTP 401 Unauthorized: invalid_token
Running a Node.js poll against /api/v2/users/presence and the auth layer keeps dropping the connection. Environment is node v20.11.0 with axios v1.6.7. The initial access token works fine for the first batch of user IDs, but the refresh cycle fails immediately. Passing grant_type=client_credentials to the token endpoint, but the response payload throws a scope mismatch error when the script tries to renew. It’s supposed to handle concurrent request quotas without dropping the bearer. Presence retrieval expects a valid token, so the queue just stalls. Added a quick cache layer with automatic staleness detection, but the 401s keep resetting the timer. External scheduler webhooks never fire since the atomic GET loop breaks. The sandbox doesn’t accept the refresh_token grant type either. Redirect URI validation keeps failing anyway. Logs just stop updating after the first expiry window.
A common config mistake is pairing client credentials with presence scopes. Sorry for the newbie question, but Genesys Cloud handles token refresh differently than Five9 or NICE CXone, the client grant often drops scope silently. Talkdesk handles this cleaner, but GC’s fine if you switch to authorization code flow. The error logs just show vague failures sometimes.
genesyscloud-python binds the token lifecycle directly to the PureCloudPlatformClientV2 instance, so the manual axios refresh loop is unnecessary and usually triggers the scope mismatch. You’ll need the authorization code flow to keep the user:presence:read scope alive across refresh cycles, and the Python SDK manages that without custom interceptors. The client_credentials grant just drops the scope silently, so switching flows fixes the drop. Here’s the initialization pattern that keeps the session stable.
from genesyscloud.platform.client import PureCloudPlatformClientV2
from genesyscloud.oauth import AuthorizationCodeGrant
oauth_client = AuthorizationCodeGrant(client_id='your_client_id', client_secret='your_secret', redirect_uri='http://localhost/callback', scope='user:presence:read user:read', state='random_state')
oauth_client.authenticate()
platform_client = PureCloudPlatformClientV2(oauth_client)
presence_result = platform_client.user_management.get_user_presence(user_id='target_user_id')
print(presence_result.body.presence_definition.name)