One project in depth

las scan ~/code/shop                                # profile, first evidence of each claim
las scan ~/code/shop --evidence                     # every piece of evidence
las scan ~/code/shop --only db,framework,routes     # only some sections

What it finds

From manifests and structure

• Languages by file count, and the main one.
• Manifests — package.json, requirements.txt, pyproject.toml (PEP 621 and Poetry), go.mod, Cargo.toml, composer.json — with every dependency and script and the line it is declared on.
• Project type and, for monorepos, its components (frontend: Node.js/JavaScript, backend: Python).
• Entry points — main/bin/start in package.json, [project.scripts], main.py/app.py/manage.py, if __name__ == "__main__", func main(), fn main().
• Main folders, by amount of code.
• README and docs.

From the code (parsed with tree-sitter: Python, JavaScript, TypeScript, TSX — never executed)

• Databases and ORMs — SQLite, PostgreSQL, MySQL, MongoDB, Redis, Supabase, DynamoDB, Prisma, SQLAlchemy, Drizzle… (dependency + import/usage, connection strings, schema.prisma providers, docker-compose images).
• Frameworks — React, Next.js, Vue, Svelte, Express, Fastify, NestJS, FastAPI, Flask, Django, Streamlit…
• External services — OpenAI, Anthropic, Gemini, Ollama, Stripe, GitHub, AWS, Firebase, Sentry, Twilio… (imports, known API hosts, variables in .env.example).
• HTTP routes with file and line — FastAPI/Flask decorators (with router prefixes), Express/Fastify/Koa/Hono calls (with app.use('/prefix', router) resolved across files), Next.js App Router route.ts/page.tsx and pages/api.
• The 10 most important files, each with a reason: "Ponto de entrada", "Acesso à base de dados (SQLite)", "Define 6 rotas", "Importado por 4 ficheiros".

The full list is in Detected technologies.

Sections for --only

project, language, entry (entry_point), structure, db (database), orm, framework, service, routes, docs-vs-code, files (most important), docs, manifest, dependencies, scripts. Separate them with commas.

What is skipped

.gitignore (including nested ones and ! exceptions) is respected, and these are always skipped: node_modules, .venv, venv, dist, build, .git, __pycache__, .next, target, site-packages and any virtualenv. Files over 1 MB and binary files are listed but never read. See them with:

las files ~/code/shop

Code in tests, examples, playgrounds, templates and docs folders is read (las ask can find it) but never counts as evidence of what the product uses.

Speed

A project of ~500 files takes well under a second; a medium real project typically 0.01–0.3 s.