yeah! for stagehand, I actually stitched together a way for you to login and authenticate on platforms without the LLM's ever seeing your login credentials. in the prompt, you can specify the username as %username% and provide the credentials right below, and then we use selectors to enter that value into the DOM and hand it back to the agent once the login is completed. you can also get structured output. afaik, stagehand themselves don't even offer these three in their SDK and there's no way to login without giving the LLM your credentials. it isn't the best, but its the only place I've seen you can get secure login + agents + structured output
although I haven't experimented with gemma 3 locally, with ollama we have instructions in the README, and all you need to do is initialize the model, and pull it when running sim studio. let me know how it goes!
