Postmate Client — a fast, powerful, and fully native VS Code extension that brings Postman-level API testing right into your editor, without the bloat, cloud dependency, or context switching.
growing buzz in QA and dev communities, it's quickly becoming a go-to for anyone who values speed, privacy, and seamless integration.
Why Postmate Client Stands Out in the VS Code Ecosystem
Postmate Client strikes an impressive balance: it's lightweight, powerful, and deeply integrated into VS Code's native experience.
Key highlights include:
- Built-in pm Library for Scripting — Just like Postman, you get a global pm object with handy methods such as:
pm.test(),
pm.expect(),
pm.assert()
pm.setVariable(),
pm.getVariable()
//Advanced helpers like
pm.schemaTest()
pm.base64Decode()
- Easy Request Creation & Imports — Paste cURL commands and import them instantly.
- Bring in APIs from Swagger/OpenAPI specs or even Postman collections. Organize everything into clean collections and folders.
- Smart Testing & Automation — Write pre- and post-request scripts in JavaScript. For simpler cases, use plain-English assertions in a tabular format—no code required for basics like status checks or value extractions. Chain requests, run collections, and view detailed execution results.
- Data-Driven Power — Manage multiple data tables, parameterize requests with {{variable}} syntax, and switch environments on the fly.
- Environments & Variables — Full support for multiple environments, dynamic variables, and request history that persists across sessions.

Top comments (1)
Postmate Client is an absolute game-changer for API testing ⭐⭐⭐⭐⭐
Clean UI, super fast performance, and incredibly easy to work with—even for complex workflows. The data selection feature during a single run is a huge productivity boost.