After that call, Mr. Scaramucci found a new outlet for his frustration. Responding to a report by Politico, which obtained his government financial disclosure form through a routine request, Mr. Scaramucci took to Twitter to describe it as a “leak” and demanded an F.B.I. investigation. In his post, he included the Twitter handle for Reince Priebus, who was still the White House chief of staff then, fueling speculation — which he later denied — that he was accusing Mr. Priebus of being a leaker.

“In light of the leak of my financial disclosure info which is a felony,” Mr. Scaramucci wrote on Twitter, “I will be contacting @FBI and the @TheJusticeDept.” He later deleted the post.

Day 7

The New Yorker’s Mr. Lizza published an account of his conversation with Mr. Scaramucci from the night before. In it, Mr. Scaramucci was quoted unleashing a vulgar tirade against leakers and the president’s chief strategist, Stephen K. Bannon. He also vowed to get Mr. Priebus fired.

By way of an apology, Mr. Scaramucci vowed to refrain from “colorful language” and to not trust reporters.

His rant diverted attention from the Republicans’ failing health care legislation in the Senate and inspired a closer look at the English language, including the use of asterisks and the word “paranoiac.”

“I would say right now that he’s being more pugnacious than effective,” Newt Gingrich, former House speaker, told the radio host Laura Ingraham later in the day. “I think he ought to slow down a little bit and learn what he’s doing.”

Day 8