# rule

{% dynamic setvar source_file "src/main/java/com/google/devtools/build/lib/starlarkbuildapi/RuleFunctionApi.java" %} {% dynamic setvar version "8.3.0" %} {% dynamic setvar original_path "/rules/lib/builtins/rule" %} {% include "_buttons.html" %} A callable value representing the type of a native or Starlark rule (created by `rule()`). Calling the value during evaluation of a package's BUILD file creates an instance of the rule and adds it to the package's target set. For more information, visit this page about Rules.