WASHINGTON  Senator Hillary Rodham Clinton was gracious in her full-throated endorsement of Senator Barack Obama. But that does not mean all is forgiven by others in the Clinton universe.

For proof, look no further than Doug Band, chief gatekeeper to former President Bill Clinton.

Mr. Band keeps close track of the past allies and beneficiaries of the Clintons who supported Mr. Obama’s campaign, three Clinton associates and campaign officials said. Indeed, he is widely known as a member of the Clinton inner circle whose memory is particularly acute on the matter of who has been there for the couple  and who has not.

“The Clintons get hundreds of requests for favors every week,” said Terry McAuliffe, the chairman of Mrs. Clinton’s presidential campaign. “Clearly, the people you’re going to do stuff for in the future are the people who have been there for you.”

Mr. McAuliffe, who knows of Mr. Band’s diligent scorekeeping, emphasized that “revenge is not what the Clintons are about.” The accounting is more about being practical, he said, adding, “You have to keep track of this.”