Discover how to use the GLPI API using a sample PowerShell script

An In-Depth Look at the GLPI API: Optimizing Systems Management with PowerShell in 2025

The GLPI IT asset management system continues to be a key pillar for administrators in 2025, solidifying its position as a robust open-source solution for incident management, service management, and scripted automation. With the integration of the REST API, it becomes possible to efficiently manage and automate maintenance and technical support, thus limiting manual intervention and increasing responsiveness. Mastering the GLPI API through PowerShell scripts offers a new dimension to IT administration, allowing GLPI to interface with any system environment.

Configuring the GLPI REST API for Seamless System Integration in 2025

Configuring the REST API is the essential first step to fully exploiting its capabilities. In 2025, GLPI simplified this step by offering an intuitive interface directly accessible from the web interface. The procedure involves activating the API in the “Configuration” menu, then “General.” It is also crucial to generate an application token, guaranteeing secure access. Connecting via PowerShell requires retrieving this endpoint URL, as well as the API keys associated with a dedicated user, in order to comply with security best practices.

Here is a table illustrating the configuration process:

Step	Action	Impact
1	Activate the REST API in GLPI	Enables communication via RESTful protocol
2	Generate an application token	Secures access and limits risks
3	Create a dedicated user with an API key	Precise rights control
4	Note the API endpoint	URL address for connection

This process guarantees reliable and secure communication between PowerShell and GLPI, facilitating the implementation of automated scripts for IT asset management.

Connect to the GLPI API with PowerShell: step-by-step procedure in 2025

Connecting to the GLPI API from PowerShell relies on constructing a suitable web request. In 2025, the consolidated version of PowerShell allows you to initiate a session in a healthy and efficient way, using the Invoke-RestMethod command. The first request is to initiate a session using the application token and user token; If the request is successful, a unique session token is returned, used to authenticate subsequent calls.

Here is a basic example illustrating this step:

$GLPIUrl = "https://example.glpi.net/apirest.php"
$AppToken = "xyz123abc456..."
$UserToken = "abc789xyz..."
# Prepare the request header
$Headers = @{
    "Authorization" = "user_token $UserToken"
    "App-Token" = $AppToken
}
# Initiate session
$InitUri = "$GLPIUrl/initSession"
$Session = Invoke-RestMethod -Method GET -Uri $InitUri -Headers $Headers
if ($Session.session_token) {
    Write-Output "Session activated, token: $($Session.session_token)"
}


Once the session is established, it becomes possible to access various functionalities, such as searching, updating or deleting elements such as computers, users or tickets. The key lies in the correct structuring of requests, respecting the formats imposed by the API, in particular concerning the authentication parameters and the body of the request.

It is recommended to regularly consult the official documentation to follow developments and benefit from new features. The secure connection and the use of specific tokens reinforce the protection of sensitive data in an environment compatible with GDPR and ISO 27001 standards.

Automating IT Asset Management: Synchronizing AD and GLPI with PowerShell in 2025
        
         
        

          
        
        
          

One of the strategic uses of the GLPI API in 2025 lies in the automated synchronization of data between Active Directory and the management system. Using PowerShell, it becomes possible to push additional information, such as the "description" field of an AD computer, to the corresponding record in GLPI. This enables centralized, real-time management of configurations and attributes, reducing human error. Here's a summary table illustrating the process:

Step




Action
Objective
1




Retrieve the list of computers in AD
Identify the machines to synchronize
2


Initiate an API session with PowerShell
Secure the communication
3


Search for each computer in GLPI
Verify its existence and retrieve its ID
4


Update the data in GLPI
Update the records based on AD information
5


End the API session
Optimize security and free up resources
This type of automation accelerates asset management, avoids duplicates, and ensures that information remains consistent, even with a constantly evolving IT environment. The mechanism relies on PUT requests to update only what has changed, while using precise filters to minimize the load on the GLPI server. Concrete examples of automation with the GLPI API in 2025: scripts and advanced use cases




The flexibility of the GLPI API generates a multitude of use cases in 2025, going far beyond simple incident management. For example, a company can automate:

Automatic ticket creation for recurring incidents via PowerShell scripts, integrated into their monitoring system.

Regular synchronization of hardware inventories, guaranteeing real-time updating.

• Proactive management of equipment life cycles by planning interventions at predefined deadlines.
• The deployment of automatic corrective actions according to predefined rules to avoid technical support saturation.
• By exploiting these features, support teams can focus on high value-added tasks, while ensuring precise traceability of all operations carried out. The combination of PowerShell and GLPI’s REST API thus becomes a strategic lever for transforming IT management into an agile and highly responsive process.
• https://www.youtube.com/watch?v=mruNUTmhTvI