You inherit a 50k-line Python monolith. Senior dev who wrote it left last month. No tests, no docs, no architecture diagram. Where do you even start?

Grep for imports? Parse the AST yourself? Spend two days drawing boxes and arrows in Mermaid?

There's a faster way. Let me show you.

What is code-atlas-py?

code-atlas-py (CLI: atlas) is a deterministic code intelligence tool. It builds a full call graph, dependency graph, and symbol index of any Python project in ~0.2 seconds. It scores every function for risk — complexity, coupling, instability — and surfaces the most dangerous spots before you touch them.