An open-source Character.AI alternative — an interactive, high-fidelity AI companion portal where users can explore preset personas, forge custom AI characters, fine-tune LLM parameters per chat, and purchase premium interaction credits.

• Futuristic Glassmorphic UI: Premium dark mode design featuring interactive message bubbles, typing indicators, and LLM tuning sliders.
• Dynamic Character Creation: Forge custom personas with descriptions, greeting prompts, avatars, and a Visibility Toggle (Public vs. Private chat).
• LLM Tuning Console: Adjust model parameters (temperature, max tokens, reasoning mode) dynamically on each chat thread.
• Secure Authentication: Integration with NextAuth using Google OAuth login.
• Premium Subscription & Credits: Integrated Stripe billing to buy premium credits for advanced LLM telemetry.
• Database Engine: Prisma ORM connected to PostgreSQL for seamless syncing of chats, messages, and custom characters.

1. Node.js (v18.0.0 or higher)
2. PostgreSQL Database (e.g., hosted on Supabase)
3. Google Developer Console Account (for NextAuth Google Login)
4. Stripe Developer Account (for payment integrations)

npm install

Create a .env file in the root directory:

# Database Connection
DATABASE_URL="postgresql://postgres:[PASSWORD]@db.[PROJECT-REF].supabase.co:5432/postgres?sslmode=require"

# NextAuth Settings
NEXTAUTH_URL="http://localhost:3000"
NEXTAUTH_SECRET="your_nextauth_secret_key"

# Google OAuth Credentials
GOOGLE_CLIENT_ID="your_google_client_id.apps.googleusercontent.com"
GOOGLE_CLIENT_SECRET="your_google_client_secret"

# Muapi Api key
MU_API_KEY="your_openrouter_api_key"

# Stripe Billing Credentials
STRIPE_SECRET_KEY="your_stripe_secret_key"
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY="your_stripe_publishable_key"
STRIPE_WEBHOOK_SECRET="your_stripe_webhook_secret"

Push the schema to your PostgreSQL database:

npx prisma db push

npm run dev

Open http://localhost:3000 to view the portal.

Distributed under the MIT License.