How do I find the API endpoint of a lambda function?

Question

I have a Lambda function that has an exposed API Gateway endpoint, and I can get the URL for that via the AWS console. However, I would like to get that URL via API call. Neithe

Answer 1

If you use CloudFormation you can get this with Python and Boto3:

import boto3

cloudformation = boto3.resource('cloudformation')
stack = cloudformation.Stack(name=stack_name)
api_url = next(
    output['OutputValue'] for output in stack.outputs
    if output['OutputKey'] == 'EndpointURL')

This is from a working example of a REST service using Chalice that I put on GitHub. Here's a link to the pertinent code, in context: aws-doc-sdk-examples.