HTTP Resolver: x-amz-target

Question

I learned how to access AWS services by HTTP Resolver at the following thread:  
https://forums.aws.amazon.com/thread.jspa?threadID=314359&tstart=0  
  
I have one new question.  
How can I find out what "x-amz-target" to specify for each AWS service?  
  
ex.

```
"AWSKendraFrontendService.Query", "AmazonForecastRuntime.QueryForecast", "AWSHawksNestServiceFacade.GetPrediction", "Comprehend_20171127.DetectSentiment", "DynamoDB_20120810.CreateTable", "AWSStepFunctions.ListStateMachines", ...
```

I use aws-cli's debug option.

```
aws transcribe list-transcription-jobs --debug
```

output:

```
2020-01-09 16:24:26,323 - MainThread - botocore.auth - DEBUG - Calculating signature using v4 auth.
2020-01-09 16:24:26,323 - MainThread - botocore.auth - DEBUG - CanonicalRequest:
POST
/

content-type:application/x-amz-json-1.1
host:transcribe.ap-northeast-1.amazonaws.com
x-amz-date:20200109T072426Z
x-amz-target:Transcribe.ListTranscriptionJobs
```

Or, I may find out by referring to service-2.json of each service from https://github.com/boto/botocore/tree/develop/botocore/data

Is there the best way to find out what to specify for "x-amz-target" ?  
Is there a list of "x-amz-target" ?

Answer

I wrote up an article explaining how to find these if you ever need to find more of them - https://tim.mattison.org/ff05f764590845e0bd2e1f8ccdebd24a

Answer

You can have a look at the normal.json files for each service and it usually is a combination of the targetPrefix property and the actual operation name:  
  
https://github.com/aws/aws-sdk-js/tree/master/apis  
  
Here's an example:  
https://github.com/aws/aws-sdk-js/blob/master/apis/comprehend-2017-11-27.normal.json#L12

Answer

My question has been resolved by your answer. Thank you for your help !!

HTTP Resolver: x-amz-target

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