Behind the Craft · Sunday, September 27, 2026
Penn, a designer on the Grockbot team, described how his 'Chief of Staff' bot can handle complex, multi-step tasks. For example, the bot not only purchased 3D printing filament but also updated an inventory tracking database. He also detailed a bot that can sell items on Facebook Marketplace, including researching prices, learning the user's writing style, and automatically lowering prices weekly if no interest is shown.
“And it does not only buy it for me. I also ask it to add it to the inventory list.”
“So I have this notion database to track all my inventory, different colors of the filament. And once it bought it, it also like update the list for me.”
“Um, I just discovered like the benefit of training different tasks together is really powerful.”
“So, like sell something on Facebook marketplace sounds easy, but actually there are a lot of steps.”