Authenticate and call Azure App Service with AAD using curl

Get AAD access token

curl -X POST -d 'grant_type=client_credentials&client_id=<APP_ID>&client_secret=<PASSWORD>&resource=https%3A%2F%2Fmanagement.azure.com%2F' https://login.microsoftonline.com/<TENANT_ID>/oauth2/token

Use bearer token in requests

curl -H 'Accept: application/json' -H "Authorization: Bearer <TOKEN>" https://bustroker.com/api/resource

Common curl patterns

POST form data

curl -X POST http://localhost:8080/data -d "param1=value1&param2=value2"

POST JSON

curl -X POST http://localhost:3000/data -H "Content-Type: application/json" -d '{"key1":"value1", "key2":"value2"}'

POST from file

curl -X POST http://localhost:3000/data -d "@data.txt"

Disable certificate validation

curl -k https://localhost:8080

Format and parse responses

Add newline after output

curl localhost:8080 ;echo

Pretty print JSON

curl localhost:8080 | json_pp

curl localhost:8080 | jq "."

Extract JSON properties with jq

The -r flag outputs raw values without quotes:

curl localhost:8080 | jq -r ".some.property.in_Json.tree"