self-executing

/S EH1 L F EH0 K S AH0 K Y UW0 T IH0 NG/
adjective
  1. 1

    Needing no legislation to enforce it.

  2. 2

    Consisting of a complete executable package that takes some action with the included data, rather than a pure data file requiring some additional tool to read it.

Source: https://en.wiktionary.org/wiki/self-executing