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PowerShell REST API Modules Cheatsheet: Key Cmdlets for API Interaction

Introduction

This cheatsheet covers the principal PowerShell modules and cmdlets used to interact with REST APIs. It is intended for DevOps professionals managing integrations and troubleshooting API connections.

Table of Contents

  1. Invoke-RestMethod
  2. Invoke-WebRequest
  3. ConvertTo-Json
  4. ConvertFrom-Json
  5. Get-Content (Reading API response)
  6. Set-Content (Logging API output)
  7. Register-PSRepository
  8. Find-Module
  9. Install-Module
  10. Update-Module

1. Invoke-RestMethod

Invoke-RestMethod -Uri "https://api.example.com/data" -Method Get

2. Invoke-WebRequest

Invoke-WebRequest -Uri "https://api.example.com/data" -Method Get

3. ConvertTo-Json

$object | ConvertTo-Json

4. ConvertFrom-Json

(Get-Content response.json -Raw) | ConvertFrom-Json

5. Get-Content (Reading API response)

$response = Invoke-RestMethod -Uri "https://api.example.com/data"
$response | Get-Content

6. Set-Content (Logging API output)

$response | ConvertTo-Json | Set-Content -Path "C:\Logs\api-log.json"

7. Register-PSRepository

Register-PSRepository -Name "PSGallery" -SourceLocation "https://www.powershellgallery.com/api/v2/"

8. Find-Module

Find-Module -Name Az

9. Install-Module

Install-Module -Name Az -Scope CurrentUser

10. Update-Module

Update-Module -Name Az