docs/stack-signatures.md

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

1. Languages
2. Web Frameworks
3. AI/ML Frameworks
4. Infrastructure
5. Data & Storage
6. Testing
7. Build & Package
8. Documentation
9. AI/Agent Tooling

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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	Notes
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	Notes
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	Notes
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