San Francisco has filed a lawsuit against Trump Media & Technology Group over its Truth API service, which charges select customers $100,000 per month for early access to President Trump's posts on Truth Social. The city alleges the service constitutes an unlawful "corrupt business scheme" that violates both California's Unfair Competition Law and federal insider trading and anti-corruption statutes. The case matters because Trump frequently makes market-moving policy announcements on the platform that significantly affect global financial markets, giving wealthy API subscribers an unfair advantage unavailable to ordinary investors.

The lawsuit provides concrete examples of the scheme's impact, including a post on 21 August in which Trump announced plans to lower beef prices through tariff exemptions; cattle futures subsequently declined sharply when markets opened hours later. Trump Media charges $100,000 monthly for access to the ten most influential accounts on Truth Social, including those of the President and other White House officials. The company, which reported a net loss exceeding $238 million this year, operates under a six-hour exclusivity agreement restricting Trump from posting identical content elsewhere. San Francisco city attorney David Chiu characterised Truth API as a "pay-to-play scheme" that has "turned public trust into private property," and the city is seeking to ban the service and impose fines of $2,500 per violation. This is not the first legal challenge; The Intercept and the Freedom of the Press Foundation filed a separate lawsuit in August.