Dear Miss Snark:
While my agent has been sending my manuscript out to editors, I have continued to build my resume - I write fiction, so I prefer not to use platform. (1) I have been very successful in getting my short stories published in literary journals, both in print and online, academic (2) and independent, two in the last month. Also, I am now on the road again giving seminars on a side businesss to Friends of the Library and other community organizations ( I have degress in history). I am booked for three already for the new year. Is this something I should tell my agent about?
(1) "prefer not to use platform" doesn't make sense. In publishing lingo platform is something you have like credentials. You wouldn't say "I prefer not to use credentials" either. I'm not exactly sure what you're trying to tell me here.
(2) academic journals don't publish short stories. Journals published by University presses can and do but those aren't considered academic journals. Academic journals are where they parse out the influence of TS Eliot on Stephen Elliot.
None of this really matters because your question is "should I tell my agent I'm out and about in the world giving talks".
This is absolutely unanswerable because every agent will respond according to what they want you to do. Ask your agent: "I'm giving talks on Snarkism in Space. Do you want me to keep you updated"?
I prefer to know all. That does not mean your agent will. Ask her/him/it.
There will be a vocabulary quiz later.