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Claude Code Internals
Tier 1
claude-code-source-map
Summary
A full deobfuscated source map of the Claude Code npm bundle reconstructed from the published package's source maps - the largest single research artifact in this corpus (~160MB of mapped source). Its directory structure serves as the canonical map of Claude Code's internal modules.
Key Takeaways
- Use the directory layout as the canonical module map of the harness
- Reconstructed from public npm source maps, not the internal repo
- Cross-check ambiguous findings against the leeyeel sourcemap
Reliability Note
Unofficial reconstruction from public npm source maps; explicitly not the original repo structure. Independent reverse-engineering effort - where analyses disagree, this catalog prefers claims confirmed by multiple sources.
Flows informed by this source
1Agent Architecture
Design a Single-Loop Agent
Build the core agent loop the leading coding agents use: one model, one loop, tools in, results folded back into context.
01Define the loop contract
02Build the tool registry
03Implement the loop with result folding
+2 more steps to Done
Best forproduction-grade builds with strict verification
5 steps90-150 minutesAdvanced