403 on /api/v2/routing/queues: which OAuth scope is missing?

NICE CXone API & Integrations
1

Looking for advice on resolving a 403 Forbidden error when calling /api/v2/routing/queues via a Zapier custom action.

  • My integration uses OAuth2 with view:users and view:routing scopes, but the API returns 403 Forbidden.
  • The request payload is empty {} and the header includes Authorization: Bearer <token>.
  • Is there a specific routing:queue or routing:queue:read scope required that I am missing in the Zapier OAuth2 configuration?
2

This is caused by scope granularity. view:routing is insufficient for queue details. You need view:routing:queue. Also, verify your OAuth app has the routing:queue:read permission in the admin console. Here is the corrected scope list for your client credentials flow:

[
 "view:users",
 "view:routing",
 "view:routing:queue"
]
3

I typically get around this by verifying the token introspection response rather than just adding scopes blindly. The suggestion above correctly identifies the missing scope, but the execution often fails due to how the Basic Auth header is constructed in automated tests.

If you are using Genesys Cloud Data Actions, ensure your trace context survives the refresh cycle. When you poll /api/v2/analytics/conversations/details/query every 3 seconds, the span context might drop if the token refresh isn’t handled explicitly.

Here is the correct approach:

  • Inject a span to track the state transition before the API call.
  • Verify the OAuth app has routing:queue:read in the admin console.
  • Use the PureCloudPlatformClientV2 SDK to handle token refresh automatically.
from purecloudplatformclientv2 import Configuration, RoutingApi, ApiClient

config = Configuration()
config.host = 'https://api.mypurecloud.com'
config.access_token = 'your_token'

with ApiClient(configuration=config) as api_client:
 routing_api = RoutingApi(api_client)
 queues = routing_api.post_routing_queues_search(body={'pageSize': 20})

Check your token introspection response. The 403 indicates the WebSocket context hasn’t propagated the connected status to the client buffer yet.

4

Make sure you verify the token introspection payload directly, because view:routing:queue is often rejected if the OAuth app lacks the underlying routing:queue:read permission in the admin console. Check the /api/v2/oauth/introspect endpoint to confirm the scope is actually attached to the active token before blaming the API.

5

The docs actually state that scope validation is only half the battle. You must also verify the OAuth client permissions are correctly mapped in the Admin Console. A common oversight is granting the scope during creation but forgetting to assign the underlying routing:queue:read permission to the specific OAuth application profile.

I confirmed this worked by implementing a strict validation loop in my audit automation scripts. Here is the precise workflow to resolve the 403:

  1. Inspect the Token: Call the introspection endpoint to verify the view:routing:queue scope is present in the scope claim.
  2. Validate Permissions: Ensure the OAuth app has the routing:queue:read permission enabled. Without this, the scope is ignored.
  3. Test with Curl: Use a clean request to isolate header issues.
curl -X GET "https://api.mypurecloud.com/api/v2/routing/queues" \
 -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
 -H "Accept: application/json"

If you still receive a 403 after confirming the scope in the introspection response, the issue is almost certainly the missing permission on the OAuth app. I use a Python snippet to automate this check during deployment:

from purecloudplatformclientv2 import PlatformClient, OAuthApi

platform_client = PlatformClient()
oauth_api = OAuthApi(platform_client)

# Introspect token to verify scopes
result = oauth_api.post_oauth_introspect(token="YOUR_ACCESS_TOKEN")
if "view:routing:queue" in result.scope:
 print("Scope valid. Check Admin Console permissions.")
else:
 print("Scope missing. Update OAuth app configuration.")

This approach eliminates guesswork. The routing:queue:read permission is mandatory for queue resource access, regardless of the scope granted. Double-check your OAuth app settings in the console to ensure this permission is toggled on.