What problem does it solve? Large codebases are hard to navigate: finding where a feature lives, which modules depend on it, and what breaks when you change it usually requires reading many irrelevant files. This Skill turns a repository into a queryable graph of modules, entities, imports, references, and call relationships so you read only the files that matter. ## Core Features & Use Cases - Architecture map generation: Build a .belief_map.sexp graph for Python, TypeScript/TSX, Rust, C#, Java, Go, Ruby/Rails, and Free Pascal/Lazarus projects, with optional LSP-enriched call edges. - Dependency and impact analysis: Query dependencies, reverse dependencies (blast radius), call chains, callers, architecture-layer violations, and the minimal boundary files for a change. - Infrastructure topology: Extract service relationships from Kustomize, Helm, and Terraform files and merge them into the graph. - Use Case: Before fixing a bug in a monorepo, run quick "file upload" to locate the owning module, see its dependencies and blast radius, and read only the 2-3 boundary files instead of scanning whole directories. ## Quick Start Ask your agent to use the Codespaces skill to build the belief map for your repository, then find where a feature is implemented, analyze that module, and list the boundary files needed for the change.