Aspen
What is Aspen?
Aspen is Treblle’s free, native macOS application explicitly designed to test REST APIs. Built with privacy in mind, it requires no login and stores no data, ensuring a smooth, local testing experience.
Aspen has an integrated AI assistant to help automate API integration tasks, such as generating data models, Open API Specifications (OAS), and integration code.
Privacy First
No login required and no data stored. Everything stays local on your Mac.
AI-Powered
Built-in AI assistant to automate tasks like generating data models and OAS.
Native macOS
Designed specifically for macOS with a fast, native user experience.
Free to Use
Completely free with no hidden costs or subscription requirements.
Steps to Use Aspen
1. Download Aspen
You can download Aspen from the Apple Mac Store .
2. Install Aspen
After downloading, install the app on your Mac and open it.
3. Create a New Request
You can create a new request by specifying the method (GET, POST, PUT, DELETE) and the URL of your API endpoint.
4. Add Request Data
For POST and PUT requests, provide the required data in the request body in JSON format.
Tip
Use the integrated AI assistant to help generate request bodies and validate your JSON structure.
5. View Response
Aspen displays the response from the API directly in the interface, showing the status code and returned data.
Aspen Collections
Aspen’s Collections feature allows you to organize your API requests into groups for easy management and reuse. You can create folders and sub-folders within Collections to organize your requests by API flow, service, or other criteria.
Create a Collection
From the History sidebar, save your API requests as a Collection and name them according to your needs.
Search Through Collections
You can search through your saved Collections to quickly find specific requests.
Note
Collections are stored locally on your Mac, ensuring your API testing workflow remains private and secure.
