Postmate Client

What it does

A free, lightweight REST API client designed for Visual Studio Code. All your data stays completely local on your machine. There’s no signup or login required, so you can start using Postmate Client right away without sharing any information online.

Extension for Visual Studio Code - Privacy-first Postman alternative for VS Code — test REST, GraphQL & WebSocket APIs locally. No login, no cloud sync, no telemetry.

Test REST, GraphQL, and WebSocket APIs inside VS Code, and let GitHub Copilot write tests against your live responses. No account, no cloud sync, no telemetry. Postmate Client is a local-first API client built natively into VS Code. Send REST and GraphQL calls, test WebSocket and WSS connections in real time, compare responses side-by-side, run data-driven CSV tests, and automate everything in CI/CD — without ever leaving your editor or sending your requests to someone else's servers. New in 2.0: AI test generation, without Postmate gaining an AI backend. Most tools add AI by routing your data through their servers. Postmate does the opposite — it runs a local MCP server and lets the agent…from marketplace.visualstudio.com

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