Mayor Bloomberg may be dishing out plenty of free advice to the Democratic and Republican presidential candidates, but he says he isn’t interested in serving as an official economic adviser to the next president.

“Being an adviser is not something I’m particularly good at,” Mr. Bloomberg said yesterday at the kickoff of a national campaign in support of free trade that will cross the country and visit the Democratic and Republican national conventions. “I don’t think there’s a position for me on the team. It’s been a long time since I’ve worked for somebody. I’ve got the greatest job in the world and I have 528 days left to go.”

In the past, when his name was floated as a potential vice presidential candidate for presidential hopefuls from both major parties, the mayor offered a similar response, saying he was too old to work for someone else.

Mr. Bloomberg, who has been critiquing the presidential campaign from the sidelines, says he will focus on his philanthropy when he leaves office at the end of 2009. Term limits prevent him from running for re-election.