NIST SP 800-53A Rev. 5
Chapter Three: The Assessment Process

NIST SP 800-53A Rev. 5 53A-3.2.4: Develop Procedures for Organization-Specific Controls

Requires assessment procedures to be written for controls the organization added itself, so tailored controls are not left unassessed.

Other controls in Chapter Three: The Assessment Process

Query this from an agent

The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.