Postmate ClientAPI Testing Inside VS Code

A fast, lightweight REST API client built natively into Visual Studio Code. No browser tabs, no context switching — just you and your APIs.

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Native VS Code Experience

Lives inside your editor. No Electron wrapper, no external runtime. Instant startup, zero overhead.

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Write tests in plain English with the tabular test editor, or use the full pm scripting library for advanced assertions.

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Manage dev, staging, and production configs with named environments. Reference values anywhere with {{variableName}}.

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Organise requests into collections and nested folders. Share, export, and version-control your entire API suite.

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Attach CSV-style Data Tables to requests and let the Collection Runner iterate through every row automatically.

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Run any collection from the command line with the Postmate CLI. Generate HTML reports and integrate with any pipeline.