Open Gamma

Open Gamma

A production-ready AI Chat application featuring tool usage (Google Slides, etc.), Vercel AI SDK for chat streaming, and NextAuth v5 for authentication.

Features

• AI Chat: Powered by Vercel AI SDK (supports OpenAI, Anthropic, Google).
• Tool Integration: Connect with external tools like Google Slides.
• Authentication: Custom authentication flow with NextAuth sessions.
• Database: PostgreSQL with Drizzle ORM.
• Infrastructure: Next.js 15 (App Router), Tailwind CSS.
• Security: Request validation, environment validation, and secure auth flows.

Tech Stack

• Framework: Next.js 16 (App Router)
• Language: TypeScript
• Database: PostgreSQL
• ORM: Drizzle ORM
• Auth: NextAuth.js (Auth.js v5)
• AI: Vercel AI SDK + Composio
• Styling: Tailwind CSS
• Validation: Zod (Env vars & Schema)
• Linting: ESLint + Prettier

Getting Started

1. Prerequisites

• Node.js 18+
• PostgreSQL database (local or cloud like Neon/Supabase)

2. Environment Setup

Create a `.env` file in the root directory:

# Database
DATABASE_URL="postgres://user:pass@localhost:5432/open_gamma"

# NextAuth
AUTH_SECRET="your_generated_secret" # generate with `npx auth secret` or `openssl rand -base64 32`
AUTH_URL="http://localhost:3000" # Deployment URL

# Composio (Tools & Auth)
COMPOSIO_API_KEY="your_composio_api_key"
AUTH_CONFIG_ID="your_auth_config_id" # From Composio Dashboard at platform.composio.dev

# AI Providers (At least one required)
OPENAI_API_KEY="sk-..."
ANTHROPIC_API_KEY="sk-..."
GEMINI_API_KEY="sk-..."

3. Installation

npm install

4. Database Setup

Push the schema to your database (for local dev):

npm run db:push

For production migrations:

npm run db:generate
npm run db:migrate

5. Run Development Server

npm run dev

Open [http://localhost:3000](http://localhost:3000).

Architecture

Authentication Flow

1. User clic