Then-Secretary fo State Hillary Clinton before speaking at the Council on Foreign Relations in Washington on Jan. 31, 2013. (Manuel Balce Ceneta/AP)

Former Secretary of State Hillary Clinton will be giving paid speeches exclusively through the Harry Walker Agency, according to the firm's Web site.

She joins her husband, former President Bill Clinton, in the agency's ranks. Former vice presidents Al Gore and Dick Cheney are also represented by Harry Walker. 

Bill Clinton made over $40 million in speaking fees in the six years after his presidency, the Post has reported.

Hillary Clinton left the State Department at the end of January. She is planning to write a memoir.

The move was first reported by the Associated Press. Clinton did not immediately return a request for comment.