curl request example with header

Example 1: curl headers

# -i to include response headers in the output.
# -H to specify a header
# -X to specify the request method
curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X GET http://hostname/resource

Example 2: curl example

curl --request POST \
  --url https://api.sendgrid.com/v3/mail/send \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{"personalizations": [{"to": [{"email": "[email protected]"}]}],"from": {"email": "[email protected]"},"subject": "Hello, World!","content": [{"type": "text/plain", "value": "Heya!"}]}'