Hi @ramm, welcome to the forum !
While we haven't tested APM agent on Websphere (especially this version), there are users that are already using it without much difficulties, for example here with version 8.5.5
We do not "officially" support Websphere application server in the sense that we don't have (yet) continuous integration tests that ensure there is no issue with this application server.
The most common issues we have with Websphere often fall into one of the following:
- using a security policy that prevent the agent from instrumenting & communicating with APM server
- requiring to change the OSGI boot delegation configuration (as in the exemple listed above).
Both those issues are quite easy to diagnose from agent/websphere logs, thus the easiest way for you should be to try with your own setup.
If you want to test only the agent without having to setup all the other parts from the stack (APM server, Kibana, ES), you can use the disable_send configuration option to make the agent not send any of the captured data.