Constituted or contracted by stipulation or agreement(adjective)
WordNet. Princeton University. 2010.
Use "agreed upon" in a sentence
"A metric called the stoplight process red, yellow, green was set up to track whether actions agreed upon in Afghanistan and Iraq were being implemented or whether policy needed to be adjusted or changed."
"And once a week he went to public school for a half day, an arrangement his father had agreed upon with the prophet, so that Joseph John could do his fair share of work in the community."
"In April Radowitz was called to Berlin and by his advice the king invited all the German governments except Austria to carry out the principles of the constitution agreed upon at Frankfort in a freer confederation called the "Union", all revolutionary elements being suppressed."