Requiring prosecutors to disclose their intent to introduce testimony from a jailhouse witness and to forward related information to the Kansas bureau of investigation.

HB 2131 requires prosecutors in Kansas to disclose specific details about jailhouse witnesses (inmates who provide testimony against a defendant while both were incarcerated) to defense attorneys before trial. This includes the witness's criminal history, any cooperation agreements or benefits received (like plea deals or sentence reductions), and details about statements made by the defendant to the witness. Prosecutors must also forward this information to the Kansas Bureau of Investigation, which will maintain a confidential statewide database accessible only to prosecutors (expiring July 1, 2029, unless renewed). The bill directly affects criminal defendants, their defense teams, and prosecutors by increasing transparency around witness reliability in criminal cases.