Section outline

  • These resources provide details on the XML structure of CAP messages. This information is critical for organizations developing or updating their own CAP alert authoring tools. 

    • CAP-103 XML for CAP Implementors (PowerPoint) File PPT

      Eliot Christian's presentation on the XML structure of CAP messages.

      3.8 MB
    • Common Alerting Protocol Version 1.2: OASIS Standard - PDF File PDF

      This is the OASIS (Organization for the Advancement of Structured Information Standards) document defining CAP version 1.2. It details the XML structure and elements used for CAP alerts. Also available as HTML on the OASIS website.

      567.3 KB
    • CAP Validator URL

      A free service that checks the syntax of CAP XML messages and Atom, RSS and EDXL-DE feeds of CAP messages. It supports CAP v1.0, v1.1 and v1.2.