MSL provides library and reference services directly to the executive and legislative branches of the state's government.

[2] They support libraries in Missouri with resource sharing and continuing education programs as well as oversee state certification for public libraries.

[5] They publish the Missouri Public Library Standards, maintain a directory of all the libraries in the state, the Wolfner News, and an e-newsletter called the Show Me Express.

[6] They also create reference guides for other state agencies in Missouri.

[7] The Wolfner Talking Book and Braille Library is housed within the State Library and offers free library services to anyone who is unable to read print materials.