Haseeb-Qureshi

Inside the Claude Code source

Anthropic's Claude Code CLI source code leaked onto GitHub recently. All of it. About 1,900 files and a lot of TypeScript.

I read through the key modules. What follows is a breakdown of the surprising parts: how the system actually works, where Anthropic made clever engineering choices, and where their approach diverges from OpenAI's Codex in ways you wouldn't guess from using either tool.

Lifecycle of a request

Here's what happens when you type a message into Claude Code:

KonradIT

DEPRECATED:

New repo: https://github.com/konradit/gopro-linux

andyedinborough

(function (window, document, $, undefined) {
    if (!$.Deferred) throw 'jQuery 1.5 is required to use the jQuery.oauth script!';

    function require(name, url) {
        if (window[name] === undefined)
            return $.ajax({ type: 'GET', cache: true, dataType: 'script', url: url });
    }

    $.oauth = function (options) {
        var d = $.Deferred();