In my EA/ICT architectural wolk I tend to apply Goal Oriented Requirements Engineering (GORE !), using KAOS as an inspiration.

I found a very good pdf on the web that also presents AORE : Agents Oriented Requirements Engineering.

The KAOS meta-model includes agents.

The AORE technique adds ways to represent agents interactions.

See great examples here :

• http://www.utdallas.edu/~chung/SYSM6309/KAOS-AORE.pdf