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Tutorials, product updates, and deep dives on fast, local-first API testing.

Latest Posts ​

OAuth 2.0 Testing is Live in Postmate Client — Free, Local, Native to VS Code ​

July 25, 2026 · 5 min read

Full OAuth 2.0 in VS Code — Client Credentials, Password, and Authorization Code with PKCE. Postmate fetches your token on send, refreshes it silently, and never writes it to disk.

HTTP QUERY Method (RFC 10008): What It Is and How to Send One from VS Code ​

July 19, 2026 · 4 min read

HTTP finally has an honest verb for POST /search: QUERY is safe and idempotent like GET, but carries a body like POST. Postmate Client supports it first-class — in VS Code and in CI.

Postmate 1.5.0: Your VS Code API Client Now Works Behind Corporate Proxies ​

July 15, 2026 · 6 min read

WebSocket Support is Live in Postmate Client — Free, Local, Native to VS Code ​

May 17, 2026 · 3 min read

How to test api with 50 different inputs ​

April 24, 2026 · 5 min read

Still manually editing the same API request 50 times to test different inputs? There's a faster way inside VS Code — no scripts, no loops, no Postman gymnastics.

Postmate Client: A Privacy-First Postman Alternative for VS Code ​

April 25, 2026 · 6 min read

A fast, privacy-first Postman alternative that runs natively inside VS Code — no login, no cloud sync, no context switching.

7 Best Free Postman Alternatives for Developers in 2026 ​

April 26, 2026 · 5 min read

A 2026 guide to the 7 best free Postman alternatives for developers — featuring lightweight, local-first, and open-source API clients.

How to Compare JSON Responses: 3 Practical Methods ​

April 29, 2026 · 5 min read

Three practical ways to compare JSON responses: online diff tools, custom scripts, and Postmate Client — with tradeoffs for each.

Postmate Client vs Postman vs Thunder Client: Scripting Compared ​

May 25, 2026 · 8 min read

A complete guide to writing pre and post-request scripts in VS Code with Postmate Client — Postman-compatible pm library, response-aware IntelliSense, and JSON Schema validation built in.

Postmate Client vs Bruno: An Honest Comparison ​

July 2, 2026 · 6 min read

Bruno got local-first right — so why build another one? A fair, side-by-side look at where the two tools differ: telemetry, test data management, response comparison, and reporting.