I'm trying to access information in Cirrus/NCM via both the SolarWinds Information Service v2 (SWISv2) and v3 (SWISv3) endpoints. Things work as expected using the SWISv2 endpoints, but whenever I try to connect using SWISv3 I get an "Unknown Provider Cirrus" error. I can access every other collection via SWISv3 without a problem.
If it matters, I'm connecting to the endpoints using SWQL studio.
Currently NCM/Cirrus data and verbs are only available via SWIS v2. Here are some additional details in a conversation from last summer:
UPDATE: [1/31 1305 GMT]
NCM is being updated to support SWIS v3,
and that capability is now available in the current BETA of NCM v7.3, if you'd like to take a look.