Accessing Amazon SNS using rest or soap api

Question

Is there any way to access Amazon SNS using REST or SOAP API, instead of using SDKs. If there is any way, please suggest me.It will be a huge help for me.

Thanks In Advance.

Answer 1

Yes, see https://docs.aws.amazon.com/sns/latest/api/API_Publish.html for example:

https://sns.us-east-2.amazonaws.com/?Action=Publish
&TopicArn=arn%3Aaws%3Asns%3Aus-east-2%3A698519295917%3AMy-Topic
&Subject=My%20first%20message
&Message=Hello%20world%21 
&Version=2010-03-31
&AUTHPARAMS

Where AUTHPARAMS is the result of the AWS Signature Version 4 signing process

Answer 2

Yes, you can. The Amazon SNS API is accessible and works using an HTTP protocol. All SDKs are just utility tools to make this communication easier.

As you can see from the AWS SNS API docs here, it is a matter of sending a POST request with correctly formulated HTTP Headers and body.

POST / HTTP/1.1
x-amz-sns-message-type: Notification
x-amz-sns-message-id: da41e39f-ea4d-435a-b922-c6aae3915ebe
x-amz-sns-topic-arn: arn:aws:sns:us-west-2:123456789012:MyTopic
x-amz-sns-subscription-arn: arn:aws:sns:us-west-2:123456789012:MyTopic:2bcfbf39-05c3-41de-beaa-fcfcc21c8f55
Content-Length: 761
Content-Type: text/plain; charset=UTF-8
Host: ec2-50-17-44-49.compute-1.amazonaws.com
Connection: Keep-Alive
User-Agent: Amazon Simple Notification Service Agent

{
  "Type" : "Notification",
  "MessageId" : "da41e39f-ea4d-435a-b922-c6aae3915ebe",
  "TopicArn" : "arn:aws:sns:us-west-2:123456789012:MyTopic",
  "Subject" : "test",
  "Message" : "test message",
  "Timestamp" : "2012-04-25T21:49:25.719Z",
  "SignatureVersion" : "1",
  "Signature" : "EXAMPLElDMXvB8r9R83tGoNn0ecwd5UjllzsvSvbItzfaMpN2nk5HVSw7XnOn/49IkxDKz8YrlH2qJXj2iZB0Zo2O71c4qQk1fMUDi3LGpij7RCW7AW9vYYsSqIKRnFS94ilu7NFhUzLiieYr4BKHpdTmdD6c0esKEYBpabxDSc=",
  "SigningCertURL" : "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-f3ecfb7224c7233fe7bb5f59f96de52f.pem",
  "UnsubscribeURL" : "https://sns.us-west-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-west-2:123456789012:MyTopic:2bcfbf39-05c3-41de-beaa-fcfcc21c8f55"
} 

You may learn how to sign and build correct requests in their docs (link provided above). So, you don't have to use SDK, and make your own requests. But, I would suggest using the SDK, since it addresses many security issues for you.