Calling Web APIs with Powershell

You go along way by calling apis at the command line. Powershell provides the following methods that you will find useful...

• Invoke-RestMethod
• Invoke-WebRequest
• ConvertTo-Json
• ConvertFrom-Json

Examples of simple api web request

	# Get a page over http
	Invoke-RestMethod -URI https://www.google.com -Method "GET"
	# Post text content over http
	Invoke-RestMethod -URI http://mvcsampleapp.apphb.com/Feedback -Body "Email=afsd&FirstName=sdfasdf&Surname=fasdfsd&Text=fasdfsdafsd" -ContentType "text/html" -Method POST
	# Get a page over http specifying the IE proxey server
	$Webproxy = (get-itemproperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings').ProxyServer
	Invoke-RestMethod -URI https://www.google.com -Method "GET" -Proxy $Webproxy -UseDefaultCredentials

view raw Invoke-RestMethodExample.ps1 hosted with ❤ by GitHub

Examples using the IE Browser Proxey settings

	# Read out proxy settings
	$Webproxy = (get-itemproperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings').ProxyServer
	# Wrapper method for Invokeing a rest method
	function Invoke-Request {
	Param( [string]$Method="GET", [string]$Body, [string]$Url )
	if($Method -eq "GET") {
	return Invoke-RestMethod -Proxy $Webproxy -UseDefaultCredentials -URI $Url -Method "GET"
	} else {
	return Invoke-RestMethod -Proxy $Webproxy -UseDefaultCredentials -URI $Url -ContentType "application/json" -Method $Method -Body $Body
	}
	}
	#Example Usage Get
	Invoke-Rest -Url "https://octopus2/api//Teams?apiKey=$API_KEY"

view raw Invoke-RestMethodExample2.ps1 hosted with ❤ by GitHub