AWS Account ID Archives

How to get the AWS Account ID in Lambda Node.js

To get the AWS Account ID of the currently running Lambda Function using Node.js use the code below.

exports.handler = async (event, context) => {
    
    const awsAccountId = context.invokedFunctionArn.split(':')[4]
    
    console.log(awsAccountId)
};

How to get the AWS Account ID in Lambda Python

There are use cases where the need to get the AWS Account ID of the Lambda Function during runtime is required. I thought it was easy as getting the AWS Region but it was not. Luckily there is a way to get it, use the step-by-step instructions below.

To get the AWS Account ID where the Lambda Function is running use the code below.

def lambda_handler(event, context):

    aws_account_id = context.invoked_function_arn.split(":")[4]

    print(aws_account_id)

How does the code work?

The context object that is being passed to the lambda_handler function provides different methods and properties about the lambda function, like invocation and execution environment.