# Stack Knowledge

> Project technology stack patterns for Next.js + Neon Postgres + Drizzle ORM + Better Auth + Tailwind CSS

- **Type:** Skill
- **Install:** `agentstack add skill-zachjxyz-jvn-stack-knowledge`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [zachjxyz](https://agentstack.voostack.com/s/zachjxyz)
- **Installs:** 0
- **Category:** [Databases](https://agentstack.voostack.com/c/databases)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [zachjxyz](https://github.com/zachjxyz)
- **Source:** https://github.com/zachjxyz/jvn/tree/main/template/.claude/skills/stack-knowledge

## Install

```sh
agentstack add skill-zachjxyz-jvn-stack-knowledge
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Stack Knowledge

This skill provides stack-specific patterns for agents making architectural and implementation decisions.

## Neon Postgres

- Use `@neondatabase/serverless` driver with Drizzle ORM
- Connection: `DATABASE_URL` env var pointing to Neon's pooled connection string
- Neon branching: each Vercel preview deployment can get its own database branch
- No Row-Level Security — authorization happens in the application layer via Better Auth middleware
- Migrations: `drizzle-kit push` for development, `drizzle-kit migrate` for production
- Always use connection pooling in serverless environments

## Drizzle ORM

- All database access goes through Drizzle — no raw SQL in application code
- Define schemas in `src/db/schema/` with one file per entity
- Index every column used in WHERE, JOIN, or ORDER BY
- Use partial indexes when filtering on constant conditions (e.g., `status = 'active'`)
- Infer types from schema: `type User = typeof users.$inferSelect`

## Better Auth

- Configure with Drizzle adapter pointing at Neon
- After adding/changing plugins, always run: `npx @better-auth/cli@latest generate`
- Import plugins from dedicated paths: `import { twoFactor } from "better-auth/plugins/two-factor"`
- Infer session types: `typeof auth.$Infer.Session`
- Environment variables: `BETTER_AUTH_SECRET`, `BETTER_AUTH_URL`
- Server-side auth: `auth.api.getSession()`

## Next.js App Router

- Server Components by default — only add `"use client"` for interactivity/hooks/browser APIs
- Server actions for mutations, route handlers for webhooks/external integrations
- Parallel data fetching with `Promise.all()` — never sequential awaits
- Wrap async server components in `` with meaningful fallbacks
- Dynamic imports via `next/dynamic` for heavy components not needed on first paint

## Tailwind CSS

- Utility-first — avoid custom CSS unless absolutely necessary
- Use `cn()` utility (clsx + tailwind-merge) for conditional classes
- Design tokens via CSS custom properties in `globals.css`

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [zachjxyz](https://github.com/zachjxyz)
- **Source:** [zachjxyz/jvn](https://github.com/zachjxyz/jvn)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-zachjxyz-jvn-stack-knowledge
- Seller: https://agentstack.voostack.com/s/zachjxyz
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.