# WATCH












Marks the given keys to be watched for conditional execution of a
[transaction][tt].

[tt]: /develop/interact/transactions

## Return information

{{< multitabs id="watch-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Simple string reply](../../develop/reference/protocol-spec#simple-strings): `OK`.

-tab-sep-

[Simple string reply](../../develop/reference/protocol-spec#simple-strings): `OK`.