Claude Code Source Recovery

In March 2026, Anthropic accidentally shipped a 57MB source map with the full TypeScript source of claude-code 2.1.88, and someone extracted all 700,000 lines before it got yanked. This skill helps you navigate that recovered codebase. It's genuinely useful if you want to see how a production CLI implements MCP protocol bindings, manages stdio transports to external servers, or renders complex terminal UIs with Ink and React hooks. The command loading system is especially interesting because it merges built-in commands, dynamically loaded skills, plugins, and MCP-exposed tools into a single dispatch layer. You can still grab the original package from Tencent's npm mirror cache if you want to poke around the bundled artifacts yourself.