tag: "ok_workers", 
?pair=ASIC/UP
tag:"off_worker" 
?pair=ASIC/DOWN
tag: "hash_rate_5m", "hash_rate_60m", "hash_rate_24h", "hash_rate_scoring")
?pair=TH/S

Any other tag 
tag: "confirmed_reward", "unconfirmed_reward", "estimated_reward", "alltime_reward" 
?sym=bitcoin

All other tags handled by blockclock API.