OpenSearch/x-pack/docs/en/watcher/input.asciidoc

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[[input]]
== Inputs
When a watch is triggered, its _input_ loads data into the execution
context. This payload is accessible during the subsequent watch execution
phases. For example, you can base a watch's condition on the data loaded by its
input.
{watcher} supports four input types:
* <<input-simple, `simple`>>: load static data into the execution context.
* <<input-search, `search`>>: load the results of a search into the execution
context.
* <<input-http, `http`>>: load the results of an HTTP request into the execution
context.
* <<input-chain, `chain`>>: use a series of inputs to load data into the
execution context.
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[]
include::input/chain.asciidoc[]