Building a VS Code extension seemed intimidating until I actually did it. Turns out the hardest part is knowing where to start — not the code itself.
I wrote a guide covering everything from scratch: how the Extension Host works, how to read selected text from the editor, how to call the OpenAI API securely, and how to publish to the Marketplace.
By the end you'll have built three working extensions: an AI Code Explainer, an AI Code Generator, and an AI Chat Sidebar.
If you've ever wanted to build your own VS Code tool →
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