Stack Signatures Reference¶

Maps file patterns and config markers to stack identifiers. The scanner uses this to classify what a repo contains. Organized by detection category. Each entry: pattern -> stack identifier + confidence.

Table of Contents¶

Languages
Web Frameworks
AI/ML Frameworks
Infrastructure
Data & Storage
Testing
Build & Package
Documentation
AI/Agent Tooling

Languages¶

Pattern	Stack ID	Confidence	Notes
`*.py` + `pyproject.toml`	python	1.0	Check `python_requires` for version
`*.py` + `requirements.txt`	python	0.95	Older pattern, still common
`*.py` + `Pipfile`	python	0.95
`*.py` + `poetry.lock`	python	1.0
`*.ts` + `tsconfig.json`	typescript	1.0
`*.js` + `package.json`	javascript	0.9	Could be TS compiled
`*.rs` + `Cargo.toml`	rust	1.0
`*.go` + `go.mod`	go	1.0
`*.java` + `pom.xml`	java	1.0	Maven
`*.java` + `build.gradle`	java	1.0	Gradle
`*.kt` + `build.gradle.kts`	kotlin	1.0
`*.rb` + `Gemfile`	ruby	1.0
`*.swift` + `Package.swift`	swift	1.0
`.cs` + `.csproj`	csharp	1.0
`*.php` + `composer.json`	php	1.0

Web Frameworks¶

Pattern	Stack ID	Confidence	Notes
`next.config.*`	nextjs	1.0	Check for app/ vs pages/
`nuxt.config.*`	nuxt	1.0
`angular.json`	angular	1.0
`svelte.config.*`	svelte	1.0
`vite.config.*` + react in deps	react	0.95	Confirm via package.json
`package.json` has `"react"`	react	0.9	Check version for 18 vs 19
`package.json` has `"vue"`	vue	0.9
`package.json` has `"express"`	express	0.95
`package.json` has `"fastify"`	fastify	0.95
pyproject/req has `fastapi`	fastapi	0.99
pyproject/req has `django`	django	0.99	Check for DRF too
pyproject/req has `flask`	flask	0.95
`Gemfile` has `rails`	rails	1.0
`go.mod` has `gin-gonic`	gin	0.95
`Cargo.toml` has `actix-web`	actix	0.95
`Cargo.toml` has `axum`	axum	0.95

AI/ML Frameworks¶

Pattern	Stack ID	Confidence	Notes
deps has `torch` or `pytorch`	pytorch	0.95
deps has `tensorflow`	tensorflow	0.95
deps has `transformers`	huggingface	0.9
deps has `langchain`	langchain	0.95	Check core vs community
deps has `llama-index`	llamaindex	0.95
deps has `crewai`	crewai	0.95
deps has `autogen`	autogen	0.95
deps has `semantic-kernel`	semantic-kernel	0.95
deps has `openai`	openai-sdk	0.8	Could be indirect
deps has `anthropic`	anthropic-sdk	0.8
deps has `dspy`	dspy	0.95
`*.ipynb` files present	jupyter	0.85

Infrastructure¶

Pattern	Stack ID	Confidence	Notes
`Dockerfile`	docker	1.0
`docker-compose.yml`	docker-compose	1.0
`.github/workflows/*.yml`	github-actions	1.0
`.gitlab-ci.yml`	gitlab-ci	1.0
`Jenkinsfile`	jenkins	1.0
`.circleci/config.yml`	circleci	1.0
`*.tf` files	terraform	1.0
`pulumi.*` or `Pulumi.yaml`	pulumi	1.0
`cdk.json`	aws-cdk	1.0
`template.yaml` (SAM)	aws-sam	0.9	Disambiguate from other templates
`serverless.yml`	serverless	1.0
`k8s/` or `kubernetes/` dir	kubernetes	0.95
`helm/` or `Chart.yaml`	helm	1.0
`kustomization.yaml`	kustomize	1.0
`ansible/` or `playbook.yml`	ansible	0.9
`fly.toml`	fly-io	1.0
`vercel.json`	vercel	1.0
`netlify.toml`	netlify	1.0
`render.yaml`	render	1.0
`railway.json`	railway	1.0

Data & Storage¶

Pattern	Stack ID	Confidence	Notes
`alembic/` or `alembic.ini`	sqlalchemy	0.95
`prisma/schema.prisma`	prisma	1.0
deps has `typeorm`	typeorm	0.95
deps has `drizzle-orm`	drizzle	0.95
deps has `sequelize`	sequelize	0.95
`migrations/` + Django	django-orm	0.9
deps has `redis` or `ioredis`	redis	0.85
deps has `kafka` or `confluent-kafka`	kafka	0.9
deps has `celery`	celery	0.95
`dags/` directory	airflow	0.9
`dbt_project.yml`	dbt	1.0
`*.sql` migration files	sql	0.7	Generic

Testing¶

Pattern	Stack ID	Confidence
`pytest.ini` or `conftest.py`	pytest	1.0
`jest.config.*`	jest	1.0
`vitest.config.*`	vitest	1.0
`cypress.config.*` or `cypress/`	cypress	1.0
`playwright.config.*`	playwright	1.0
`.mocharc.*`	mocha	1.0

Build & Package¶

Pattern	Stack ID	Confidence
`webpack.config.*`	webpack	1.0
`vite.config.*`	vite	1.0
`esbuild.*` in scripts	esbuild	0.8
`turbo.json`	turborepo	1.0
`nx.json`	nx	1.0
`lerna.json`	lerna	1.0
`pnpm-workspace.yaml`	pnpm-workspace	1.0
`yarn.lock` + `workspaces` in pkg.json	yarn-workspace	0.95

Documentation¶

Pattern	Stack ID	Confidence
`mkdocs.yml`	mkdocs	1.0
`docusaurus.config.*`	docusaurus	1.0
`conf.py` + `index.rst`	sphinx	0.95
`.vitepress/`	vitepress	1.0
`openapi.yaml` or `swagger.yaml`	openapi	0.95
`*.graphql` or `schema.graphql`	graphql	0.9

AI/Agent Tooling¶

Pattern	Stack ID	Confidence	Notes
`mcp.json` or `.mcp/`	mcp	1.0
`CLAUDE.md`	claude-code	0.95
`.cursorrules`	cursor	0.9
`.windsurfrules`	windsurf	0.9
`prompts/` directory	prompt-management	0.7
`.env` with `*_API_KEY`	api-keys	0.6	Names only, never values