Example outputs

Real package.json files → detected stack → generated standards. No templates — every rule references specific detected libraries.

Next.js + Prisma + Zod

Input

{
  "dependencies": {
    "next": "^15.0",
    "react": "^19.0",
    "tailwindcss": "^4.0",
    "prisma": "^6.0",
    "@prisma/client": "^6.0",
    "zod": "^3.23"
  }
}

Detected Stack

- Next.js 15 App Router
- React 19 Server Components
- Tailwind CSS v4
- Prisma ORM with PostgreSQL
- Zod validation

Generated Standards

Prefer Server Components by default
Next.js 15 + React 19. Server Components reduce client bundle size and improve data fetching consistency.
Never fetch data in client components
App Router pattern. Server Components fetch data, pass as props to client leaves. Prevents waterfall requests.
Wrap multi-table writes in Prisma transactions
Prisma $transaction ensures atomicity. Without it, partial writes create inconsistent state.
Validate all external input with Zod schemas
Define schemas in lib/schemas/. Zod infers TypeScript types, eliminating duplication.
Use Server Actions for form mutations
Next.js 15 native pattern. Avoids API routes for form submissions, keeps logic co-located.

FastAPI + SQLAlchemy

Input

{
  "dependencies": {
    "fastapi": "^0.115",
    "uvicorn": "^0.32",
    "sqlalchemy": "^2.0",
    "pydantic": "^2.9",
    "alembic": "^1.14"
  }
}

Detected Stack

- Python 3.12+
- FastAPI 0.115
- SQLAlchemy 2.0 ORM
- Pydantic v2 schemas
- Alembic migrations

Generated Standards

Use Pydantic v2 model_validate, not dict()
Pydantic v2's model_validate provides strict type checking. dict() bypasses validation.
Never use sync SQLAlchemy sessions in async routes
FastAPI is async-native. Sync sessions block the event loop. Use AsyncSession exclusively.
Alembic migrations required before deploy
Without alembic upgrade head in CI, schema drift will cause production errors.
Return Pydantic response models, never raw ORM objects
ORM objects leak internal DB structure. Pydantic models define public API contracts.
Use lifespan context for DB pool initialization
FastAPI lifespan replaces deprecated on_event. Ensures clean startup/shutdown of connection pools.

Go + Chi + sqlc

Input

{
  "dependencies": {
    "go": "1.23",
    "chi": "^5.1",
    "sqlc": "^1.27",
    "pgx": "^5.7",
    "validator": "^10"
  }
}

Detected Stack

- Go 1.23
- Chi router
- sqlc for type-safe SQL
- pgx PostgreSQL driver
- validator v10

Generated Standards

Never write raw SQL strings — use sqlc generated code
sqlc generates type-safe Go from SQL. Prevents SQL injection and type mismatches at compile time.
Context passed as first parameter to every function
Go convention. Enables request-scoped cancellation and timeout propagation.
Validate all request structs before processing
validator tags on structs catch bad input at the boundary. Never trust payloads, even internal ones.
Wrap errors with fmt.Errorf and %w, never return bare errors
Go 1.13+ error wrapping preserves the error chain. Callers can use errors.Is and errors.As.
Use pgx pool, not single connection
pgxpool manages connection lifecycle. Single connections leak and don't recover from network failures.

Try it with your own repo

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