Live data from Hacker News

Show HN: Sim Studio – Open-Source Agent Workflow GUI

github.com

21–30 of 63 posts

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#21
post #19

Earlier quoted context omitted.

we have support for browser agents (browser-use and stagehand), but running this locally with computer use agents would change the game. will explore :)

Can the browser agents use my already running browser? It would be nice to automate some light workflows in platforms that require login, especially the ones that make it hard to use headless browsers Right now my solution is to build extensions that I can manually start on my browser. But using extensions to gather and export data + maintaining them is a bit of a pain

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

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#22

Congrats on the launch the tool looks phenomenal. I’m conflicted because n8n does feel like the right level of abstraction but the UI and dated JS runtime environment are horrible. I don’t really want to write my own memory functionality for my AI agents but wondering if it’s worth it just to have a nicer UI and more modern JS env.

for ease of use, we are exploring a way to add in short-term and medium-term memory out of the box in a way that doesn't require us to inject anything into the agent's context unless the user explicitly wants to. for longer-term memory, we support popular vector DB's like pinecone and integrations with mem0

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#23
post #19

Earlier quoted context omitted.

Can the browser agents use my already running browser? It would be nice to automate some light workflows in platforms that require login, especially the ones that make it hard to use headless browsers Right now my solution is to build extensions that I can manually start on my browser. But using extensions to gather and export data + maintaining them is a bit of a pain

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, sta…

Amazing. Can it also use multimodal local LLMs? For example, can it pass images to gemma3 running via ollama?

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#24
post #23

Earlier quoted context omitted.

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, sta…

Amazing. Can it also use multimodal local LLMs? For example, can it pass images to gemma3 running via ollama?

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!

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#27
Youtube demo looks intriguing, I'm self-hosting n8n for exact this purpose with a home run LLM machine in a local k8s cluster (lol) but out of the box I can tell your tool surpasses AI integrations and workflow in n8n.

Quick glance at GitHub suggests that GitHub package for the Docker image is missing, let me know if you need help with that — happy to contribute!

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#28

Youtube demo looks intriguing, I'm self-hosting n8n for exact this purpose with a home run LLM machine in a local k8s cluster (lol) but out of the box I can tell your tool surpasses AI integrations and workflow in n8n. Quick glance at GitHub suggests that GitHub package for the Docker image is missing, let me know if you need help with that — happy to contribute!

thanks! that would be awesome to have, always welcome contributors :)

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#29
Congratulations, Emir and Waleed! This is exactly the kind of OSS tooling I’ve been waiting for. I’ve spent countless hours wrestling with multi-step agent workflows hidden inside monolithic prompts, and every iteration felt like shooting in the dark. Having a drag-and-drop, executable graph with built-in branching, loops, and observability is a game-changer.

Re: Show HN: Sim Studio – Open-Source Agent Workflow GUI

#30
post #25

This is pretty sick, I love having that much control without having to hack around a bunch of stuff.

thank you and exactly! that's why we built it. trigger it many different ways, swap out tools, models, etc. Just focus on the things that matter for agent performance and ignore everything else
Post reply on HN