I asked for clarification inside the documentation whether tool events are supported in python implemented tools only. Nicely the documentation now clearly says that events are not supported with OpenAPI and MCP based tools, at least in the sense of "just use the event emitter".

Then I created a feature request for supporting tool events with external tools also. @tjbck said that there exists an endpoint to emit events to a specific message yet. This means, if an external tool becomes the information to the caller identifier, e.g. with an http header entry, it is possible for external tools to deal with tool requests.

This is currently undocumented as far as I know, @Classic298 says it would be time for another doc issue regarding this. Here it is, thanks a lot.