The Ultimate API Client
for Developers, QA, and Teams

JetClient provides everything you need to design, test, and debug APIs right inside your JetBrains IDE. Work completely offline, with Git sync ensuring efficient collaboration across your team.

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Why choose JetClient

Offering all the essential features you’d expect from an API client, JetClient brings fresh ideas and unique capabilities.

File Sync

  • Bring Your Own Version Control: Use Git or any other version control system to manage and track file changes.
  • Readable Format: Requests and folders are stored in separate, structured Markdown files, making it easy to review changes and merge updates.
  • Team Collaboration: Keep your request collections, tests, examples, and documentation in sync with your team.
  • Data Privacy: Your data is stored securely in your own repository, not in the cloud.

Powerful Scripting

  • Scripts as First-Class Citizens: In addition to pre-request and post-response scripts, standalone Scripts let you build test suites, define reusable logic, and automate workflows.
  • Code-First Testing: Write test scenarios in Scripts just like you would in any programming language. Reuse existing requests or other Scripts, and leverage assertions, conditions, loops, and more to build complex test scenarios. With Scripts, there’s no need to duplicate requests for different scenarios, organize them into separate folders, or rely on hacks like setNextRequest for control flow.

Advanced Variables

  • JSON5 Syntax: Define variables using JSON5, which supports trailing commas, properties without quotes, and comments.
  • Powerful Variables: Variables can go beyond primitive values — they can be arrays, JSON objects, reference other variables, or even include expressions with arithmetic operations, string concatenation, and function calls. Built-in functions support random data generation, user prompts, file reading, JavaScript evaluation, executing shell commands, and more.
  • Environment and Folder Variables: Define variables at the environment or folder level, with folder variables being either general or environment-specific.
  • Shared and Local Variables: The variables editor is split into two sections — shared variables, saved to sync files, and local variables, which remain unsynced. This ensures a clear distinction between shared and private data.

Environment Groups

  • Select Multiple Environments: Create groups of environments for different contexts such as environments (dev, test, prod), users, clients, tenants, and more. Each environment has its own variables. Select multiple environments simultaneously — one from each group — to combine sets of variables as needed.
  • Easily Switch Contexts: Quickly switch between users, clients, and other contexts with just a few clicks — no more manually changing variables to test different contexts.

OpenAPI Integration

  • Up-to-Date Endpoints and Schemas: View endpoints and schemas that are always synced with your OpenAPI spec.
  • Drag and Drop to Request Collection: Easily add endpoints to your request collection.
  • Seamless Navigation: Navigate between requests and their corresponding OpenAPI endpoints or schemas with ease.
  • Auto-Fill JSON Body: Automatically populate request bodies with fields from the spec.

Empowered by IDE

  • Powerful JavaScript Support: Enjoy code completion, navigation, and refactoring in your scripts.
  • AI Assistance for Testing: Leverage AI tools like GitHub Copilot and JetBrains Assistance to help write your tests.
  • Advanced Navigation: Quickly navigate to variable definitions, failed tests, and error stack traces.
  • Other IDE Capabilities: Powerful Git support, the ability to work with OpenAPI specifications and GraphQL schemas, and more.

Reimagine How You
Build, Test, Collaborate on APIs

Discover what makes JetClient stand out — no registration or payment needed. Just install the plugin in your JetBrains IDE and get started!

Get Started for Free Learn more

What developers say

James Robb

Fantastic alternative to Postman to use inside of the editor. Really solid implementation, it works like a charm, has everything I need it for and I don't feel any feature I used in Postman is missing. In fact, I bought a license since it was such a productivity boost for my work instead of context switching between windows all the time.

Christopher

This is amazing. For my purposes, I've been able to do away with Postman, and now I don't need to leave WebStorm, or any JetBrains IDE for that matter, to test my API's. Thank you for creating this!!!

Joshua Oliver

Awesome plugin, very comparable to Postman in my experience. Definitely the best REST client plugin for IntelliJ.

Rainer Alföldi

Great tool. Does what it says it does. Responsive author. There might be a tiny little bit of usability here and there that could be better, but overall very good tool.

Shakil Ahmed

I use it often with intellij community. I find it very helpful.

Daniel Amos

A must have plugin, worth every cent.

Jorge Antezana

Best plugin I've seen so far that looks like Postman. Amazing job on making this!

Tiago Oliveira

Works gracefully. Simple, but powerful.

[v]

Thanks for this feature, it saves me time and avoids using the Postman software.

1/3

Frequently asked questions

Yes, most features of JetClient are free, including file sync, environments, variables, and scripts. However, certain advanced features, like OpenAPI integration, are part of the paid version. A 14-day trial is available for you to try all premium features before committing.

JetClient is available exclusively as a plugin for JetBrains IDEs. However, you can use it with free JetBrains IDEs like IntelliJ IDEA Community Edition, PyCharm Community Edition, or Android Studio.

Purchasing happens through the JetBrains Marketplace, using the same methods as buying a JetBrains IDE subscription.

No, you don’t need to register an account. Simply install the plugin and start using it. If you choose to upgrade to the paid version, the process is handled through JetBrains Marketplace, where you likely already have an account if you're using a paid JetBrains IDE.

Not yet, but a CLI tool for running tests will be available soon.

Yes, JetClient works fully offline, doesn’t use any cloud or server for your data, and doesn’t send analytics or any other information. Collaboration is handled by sharing JetClient sync files through Git or other VCS in your repository.