[ aws . ssm ]



Sends a signal to an Automation execution to change the current behavior or status of the execution.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.


--automation-execution-id <value>
--signal-type <value>
[--payload <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]


--automation-execution-id (string)

The unique identifier for an existing Automation execution that you want to send the signal to.

--signal-type (string)

The type of signal to send to an Automation execution.

Possible values:

  • Approve

  • Reject

  • StartStep

  • StopStep

  • Resume

--payload (map)

The data sent with the signal. The data schema depends on the type of signal used in the request.

For Approve and Reject signal types, the payload is an optional comment that you can send with the signal type. For example:

Comment="Looks good"

For StartStep and Resume signal types, you must send the name of the Automation step to start or resume as the payload. For example:


For the StopStep signal type, you must send the step execution ID as the payload. For example:


key -> (string)

value -> (list)


Shorthand Syntax:


JSON Syntax:

{"string": ["string", ...]

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.


To send a singal to an automation execution

The following send-automation-signal example sends an Approve signal to an Automation execution.

aws ssm send-automation-signal \
    --automation-execution-id 73c8eef8-f4ee-4a05-820c-e354fEXAMPLE \
    --signal-type "Approve"

This command produces no output.

For more information, see Running an Automation Workflow with Approvers in the AWS Systems Manager User Guide.