The phrase "to become an agent" means to take on the role or position of being someone's representative, acting on their behalf in a particular matter. Full definition
Art institutions in the western world are constantly on the lookout for artists capable of becoming agents of social change. (kavigupta.com)
These figures show that there is a great opportunity here for real estate professionals to get educated, involved, and become agents for change. (rismedia.com)
Some additional field - testing is required before the $ 3 gadget becomes an agent in improving world health however. (treehugger.com)