Fast REST API Client for VS Code.
A fast, local-first REST client for VS Code and a focused alternative to Postman and Thunder Client, with collection runner, scripting, tests, cookies, environments, and Postman compatibility.
Why Developers Love LiteClient
A better Postman and Thunder Client alternative for VS Code
LiteClient keeps API testing inside your editor, removes account friction, and gives you the features serious API workflows actually need.
Built for VS Code
Native panels, trees, themes, tabs, and shortcuts make LiteClient feel like part of your editor instead of a separate app squeezed inside it.
Local-first by default
No accounts, no telemetry, no forced sync. Keep collections, environments, cookies, and history on your machine or in workspace storage.
Ready for real workflows
Use collection runner, scripts, test assertions, OAuth 2.0, collection variables, and Postman import/export without leaving VS Code.
Get Started in 3 Steps
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Install Extension
Add LiteClient from VS Code Marketplace in seconds
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Create Collection
Organize your API requests in structured collections
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Start Testing
Send requests and manage your APIs right in your editor
Learn LiteClient faster with the docs
Clear links into installation, quickstart, OAuth, scripting, migration, and release updates help both users and search engines understand the product faster.
Installation Guide
Install LiteClient from the VS Code Marketplace, Open VSX, or VSIX.
Quickstart
Send your first request, set up environments, and organize collections.
OAuth 2.0 Guide
Configure Auth Code, PKCE, and Client Credentials flows inside LiteClient.
Scripting API
Use the Postman-compatible `pm` API for pre-request and post-response automation.
Postman Migration
Move existing Postman collections, auth, variables, and scripts into LiteClient.
Changelog
Track new releases, shipped features, and product improvements over time.
Blazing Fast
Native implementation with zero startup time. It restores your workspace instantly without the bloat.
Total Privacy
No cloud accounts, no forced syncing, and absolutely zero telemetry. Your data stays on your machine.
Pure Native
Integrates seamlessly into your IDE using native components, trees, and themes for zero friction.
Everything you need, nothing you don't.
Collection Runner
Run collections and folders with real-time progress, results, and per-request drill-downs
Scripts & Tests
Run pre-request and post-response scripts with a Postman-style `pm` API and built-in test reporting
Environment Manager
Manage initial values, current values, secrets, and enabled state in a dedicated table UI
Collection Variables
Use collection-scoped variables with autocomplete, request metadata visibility, and Postman round-tripping
Response Formatting
Pretty-print JSON, HTML, and XML responses automatically, with a manual format action when you want it
OAuth 2.0 & PKCE
Support for Auth Code, PKCE, and Client Credentials with token caching and refresh
Workspace Storage
Store collections, environments, and history in `.liteclient/` for Git-friendly team workflows
Variable Autocomplete
Trigger suggestions with `{{` in URLs, headers, params, and request bodies
Cookies & Run History
Persist per-domain cookies and keep an immutable execution ledger for replay, debugging, and runner output
Postman Import/Export
Bring over requests, auth, variables, and scripts without rebuilding collections by hand
Multi-File Requests
Create standalone `.lcreq` request files, open multiple tabs, and work with files directly in your workspace
Frequently asked questions
Clear answers for the product and comparison questions people search most often.