A new A.I.-powered search tool that President Trump unveiled Tuesday to help Americans get information from the federal government provides facts that contradict false claims he has made about topics such as election fraud and immigration.

In an event announcing the website’s launch, Mr. Trump said the tool was “damn good” and would be “one front door for every single question” someone could ask of the federal government.

“With America.gov, the entire government will fit in the palm of your hand,” Mr. Trump said, adding, “everything will be answered easily and quickly.”

But the president would not like many answers that America.gov provides. Citing official government sources, the chatbot, which calls itself “America,” fact-checks an extensive list of Mr. Trump’s most common false claims. They include election fraud, immigration, tariffs, inflation and the president’s signature policy bill that he signed into law last year.

According to America.gov: It is Americans, and not foreign companies, that pay for Mr. Trump’s import tariffs; U.S. elections are generally safe and secure and prosecuted cases of voter fraud are “tiny” compared to the hundreds of millions of votes cast; Mr. Trump is wrong when he says that 25 million immigrants illegally crossed the border under his predecessor, President Joseph R. Biden Jr.; Consumer prices are not going down, as Mr. Trump frequently claims.

Largely citing figures from the Congressional Budget Office, the nonpartisan scorekeeper, America.gov said that Mr. Trump’s signature domestic policy bill, signed into law last year, is estimated to add trillions of dollars to the national debt and cause more than 10 million people to lose their health insurance. The chatbot agreed with a statement that the law “on average made the poorest people in America even poorer and the richest people in America even richer.”