Sample script to curl a url passed as first argument to an AWS API Gateway configured with IAM authentication (AWS_IAM)

awscurl.sh

#! /bin/bash

AWS_ACCESS_KEY_ID="$(aws configure get aws_access_key_id)"
AWS_SECRET_ACCESS_KEY="$(aws configure get aws_secret_access_key)"
AWS_SESSION_TOKEN=$(aws configure get aws_session_token)
AWS_REGION=$(aws configure get region)

# from https://gist.github.com/slawekzachcial/fe23184124763dfb82f233b5dde2394b?permalink_comment_id=4292171#gistcomment-4292171

curl --request GET -v \
  "$1" \
  --aws-sigv4 aws:amz:${AWS_REGION}:execute-api \
  --user "${AWS_ACCESS_KEY_ID}:${AWS_SECRET_ACCESS_KEY}" \
  --header "x-amz-security-token: ${AWS_SESSION_TOKEN}" \
  --header 'Accept: application/json'