Here's how you can achieve automatic switching to the best algo.

Use the password parameter to define a set of algos you want to mine. Your miner connection will close (and move to your next configured algo) if the algo is not the best profitable of your set.

-p x11,neoscrypt,lyra2

-p scrypt,scryptn

The difficulty parameter can be combined with algos.

-p d=64,scrypt,scryptn

Or with any other.

-p rig1,scrypt,scryptn

Note that the password parameter must be all together, that is no spaces.

To complete you setup, you will need to configure your miner to round robin through all algos.

Here is an example of a windows batch file for ccminer.

:start

ccminer -r 0 -a x11   -o stratum+tcp://raptorhash.net:3533 -u joe -p x11,x13,x14,x15,quark,lyra2
ccminer -r 0 -a x13   -o stratum+tcp://raptorhash.net:3633 -u joe -p x11,x13,x14,x15,quark,lyra2
ccminer -r 0 -a x15   -o stratum+tcp://raptorhash.net:3733 -u joe -p x11,x13,x14,x15,quark,lyra2
ccminer -r 0 -a lyra2 -o stratum+tcp://raptorhash.net:4433 -u joe -p x11,x13,x14,x15,quark,lyra2
ccminer -r 0 -a quark -o stratum+tcp://raptorhash.net:4033 -u joe -p x11,x13,x14,x15,quark,lyra2

sleep 5000
goto start

By default, we use our built in factor table to normalize the profitability. The scrypt algo is the reference with a factor of 1.

'scrypt'	=> 1,
'scryptn'	=> 0.5,
'c11'		=> 2.0,
'x11'		=> 5.5,
'x13'		=> 3.9,
'x14'		=> 3.7,
'x15'		=> 3.5,
'nist5'		=> 6.0,
'zr5'		=> 10.0,
'drop'		=> 5.0;
'neoscrypt'	=> 0.3,
'lyra2'		=> 1.3,
'quark'		=> 6,

But you can also specify your own profitability factors for each algo.

-p x11=5.1,neoscrypt=0.5,lyra2=2