archy

Exposes 17 tools that let Claude and other MCP clients read Python architectural health in real time. You get module dependency graphs, import cycle detection, layer violation checks against archy.yaml rules, hotspot analysis that crosses cyclomatic complexity with git churn, and a single trended score per commit. Built on tree-sitter so it survives syntax errors. The check command gates CI, the mcp command wires into agents so they see their own structural impact before pushing code. Particularly useful when AI tools generate fast, correct code that quietly accumulates cycles and coupling debt. Requires Python 3.10 or newer and works best with a persistent parse cache at .archy/index.db for sub-second warm builds on large codebases.