FBI reveals how many undercover agents were on the ground during January 6 riots | Daily Mail Online

FBI Embedded 275 Plainclothes Agents In Jan. 6 Crowds, Blaze Reports, As House Panel Probes Informants’ Roles

Then there's this...

DOJ OIG Releases Report on the FBI’s Handling of Its Confidential Human Sources and Intelligence Collection Efforts in the Lead Up to the January 6, 2021 Electoral Certification

FBI gives DOJ details on employees who worked Jan. 6 cases : NPR

DOJ watchdog says FBI had 26 confidential sources in DC for Jan. 6 riot -- but no evidence of undercover agents