LLM Skill Marketplace

Go + Postgres marketplace where authenticated users can upload LLM skill files, sell them, and buyers can unlock and copy/download purchased skills.

Stack

• Backend: Go (go run .)
• Frontend: vanilla HTML/CSS/JS
• Database: Postgres
• Auth: external OIDC JWT validation via JWKS
• Config: environment variables with .env support

Run

1. Copy .env.example to .env and set values.
2. Start Postgres and create the target database.
3. Install dependencies:

   go mod tidy
   

4. Start server:

   go run .
   

5. Open http://localhost:8080.

Local dev mode (no auth setup)

Set DEV_MODE=true in .env (enabled by default in .env.example). In this mode, protected routes always authenticate as:

• sub: demo-user-001
• email: demo@example.com
• name: Demo User

OIDC variables are not required when DEV_MODE=true.

Auth flow

When DEV_MODE=false, login is handled directly by the app:

• GET /auth/login redirects to your OIDC provider
• GET /auth/callback exchanges code for access token using OIDC_CLIENT_ID + OIDC_CLIENT_SECRET
• Access token is stored in secure HttpOnly session cookie
• Protected routes validate that token via JWKS
• GET /auth/logout clears the local session (and optionally redirects to provider logout URL)

Key routes

• GET /dashboard: upload form
• GET /skills: browse listings and buy
• GET /my-skills: purchased skills and copy/download access
• GET /auth/login: start OIDC login
• GET /auth/callback: OIDC callback
• GET /auth/logout: logout
• POST /api/upload: upload and list a skill
• POST /api/purchase: buy a skill
• GET /api/my-skills: owned purchased list
• GET /uploads/:id: download unlocked skill file