Mark Zuckerberg has finally finished building and coding Jarvis, a computerized, AI butler patterned after Tony Stark’s own wisecracking housemate.

The creator of Facebook detailed how he created Jarvis in a post earlier today. While he finished the build earlier than expected, he did run into unique problems while creating Jarvis, namely figuring out how to make each appliance speak to each other since they use different code structures, as well as make Jarvis learn how to understand humans using natural language.

The result is pretty impressive – Jarvis can turn off the lights when told, change the music and send it to speakers in different areas in his house and even make him toast.

Jarvis responds to both voice commands or through a chatbot, which allows Zuckerberg to control him wherever he is. While Zuckerberg said that open sourcing the software is difficult since it’s still tied to his home, it’s not farfetched to think that he’ll make it available at a later time via a finished product, branded by Facebook. Till then, we can all just watch in amazement as he shows off the finished product in the Facebook video post embedded above, and marvel at Jarvis’ musical sensibilities.