[[input]] === Input A watch _input_ loads data into a watch's execution context as the initial payload. Watcher supports three input types: <<input-simple, `simple`>> , <<input-search, `search`>>, and <<input-http, `http`>> NOTE: If you don't define an input for a watch, an empty payload is loaded into the execution context. include::input/simple.asciidoc[] include::input/search.asciidoc[] include::input/http.asciidoc[]