Wrote this thing, which allows you to control the user1 and user1 LEDs (A/B) via a Beanstalkd queue
I’m going to use this to monitor the status of disks / backups and things like that.
Maybe it can help some people here… it can certainly be expanded and PR’s are welcome 
Looks good but we need to add some real jobs, such as listening io for read/write.
Is it compatible with TOS 6?
Well I am using a bash script that runs a PostgreSQL query and then uses beanstool to put things into the beanstalk queue. All this is a cronjob, on a x86 server and nothing to do with the router itself.
I checked and I am on a 5 version of the OS. The only thing it really does is write to some /sys files so it is likely to still work… if not it would (likely) be a super easy 5 min job to hack the code to make it work.