input MUSE data into Open BCI GUI is not possible
but there are several other canditates:
https://openbci.com/forum/index.php?p=/discussion/comment/16179#Comment_16179
The HackEEG version of OpenBCI has as far as I know LSL support and could be connected to a Muse 2 over LSL:
https://www.crowdsupply.com/starcat/hackeeg/updates/hackeeg-32-channels-displaying-in-openbci
3.7.2021
the Mind Monitor app has Python examples:
https://mind-monitor.com/forums/viewtopic.php?f=15&t=1600
last edited 21.6.2021
Home Assistant support for the Muse Headband?
Home Assistant has a InfluxDB plugin and Grafana plugin, sensors can be connected for instance over MQTT. There is already a large sensor data base available, for instance Garmin connect steps and calories can be syncronized into home assistant. An MQTT or Python interface for the Mind Monitor to Home Assistant would be helpful.
There is a LSL version of OpenBCI
https://www.crowdsupply.com/starcat/hackeeg/updates/hackeeg-32-channels-displaying-in-openbci
added 4.7.2021