Mayor Adams’ legal defense fund has raised about $500,000, an insider close to the effort said.

Adams has been under a cloud since the FBI raided the home of his top fundraiser, Brianna Suggs, in November.

The federal probe is reportedly focused on whether Adams’ 2021 campaign improperly worked with the Turkish government to funnel cash to his mayoral run.

Rumors of an indictment have swirled for weeks, but have so far come to nothing.

Legal defense fund donors, whose names are expected to be disclosed in mid-January, are limited to a maximum contribution of just $5,000.

Known donors and boosters to the fund so far include former Adams Chief of Staff Frank Carone; former Gov. David Paterson; the longtime head of the New York chapter of the NAACP, Hazel Dukes; the chief of the Brooklyn Democratic Party, Assemblywoman Rodneyse Bichotte Hermelyn; Queens state Sen. Leroy Comrie (D-Queens), and Assemblywoman Jennifer Rajkumar (D-Queens).

The $500,000 figure puts Adams on target for his stated goal of having half a million in place heading into 2024.

Former Mayor de Blasio launched a similar effort to settle $300,000 in legal bills after he faced questions in a federal and state pay-to-play probe in 2017.

“I was with Adams a few days ago. He thinks he’s fine. He thinks he’s going to go down as the greatest mayor in New York City history,” said one confidant.

A rep for Adams did not respond to a request for comment from The Post.