GitReverse

https://github.com/user-attachments/assets/f0cdb7b2-c6f0-4483-8a01-153170479f2e

Turn a public GitHub repository into a single synthetic user prompt that someone might paste into Cursor, Claude Code, Codex, etc. to vibe code the project from scratch.

The app pulls repo metadata, a root file tree (depth 1), and the README, then uses an LLM to produce one short, conversational prompt grounded in that context.

Paste a GitHub URL or owner/repo on the home page. You can also open /owner/repo (e.g. /vercel/next.js) for a shareable link that runs the same flow.

GitHub-style /owner/repo/tree/... URLs on this site redirect to /owner/repo so they do not 404. The reverse flow still uses the whole repo for now; subfolder-aware context (scoped to that path) is planned for a later change.

Stack

Next.js 16 (App Router), React 19, TypeScript, Tailwind CSS 4, GitHub API, Supabase (optional), Stripe (optional).

Configuration

Copy .env.example to .env.local and fill in at least one LLM API key.

Quick LLM (required)

The quick reverse endpoint supports four providers. Set GITREVERSE_QUICK_LLM to pin one, or leave it unset (auto) to let the app use whichever key it finds first:

In auto mode the order of preference is: Grok → OpenRouter → Azure → Google.

Azure quick reverse uses gpt-5.4 by default with AZURE_OPENAI_REASONING_EFFORT=medium. Title generation also uses Azure and defaults to gpt-5.4-mini with reasoning disabled.

Embeddings / library search

Prompt-cache embeddings and /library hybrid search now use Azure embeddings first:

• AZURE_OPENAI_EMBEDDING_MODEL — defaults to text-embedding-3-small
• AZURE_OPENAI_EMBEDDING_DIMENSIONS — defaults to 512
• AZURE_OPENAI_EMBEDDING_DEPLOYMENT — optional explicit deployment name
• AZURE_OPENAI_DEPLOYMENT_NAME_MAP — optional model=deployment mapping when deployment names differ from model ids

If your Azure resource does not yet have an embedding deployment, you can temporarily set OPENAI_API_KEY as an embedding-only fallback while quick reverse and title generation stay on Azure.

Other env vars

• GITHUB_TOKEN — optional; increases GitHub API rate limits.
• SUPABASE_URL + SUPABASE_PUBLISHABLE_KEY — optional; enables server-side caching of quick prompts in prompt_cache and exposes the /library page.
• VIEWS_IP_SALT — required in production. Generate one with openssl rand -hex 32. The app will refuse to start in production without a non-default value.

Custom reverse (optional)

For deep / focus prompts, point the app at a backend service:

CUSTOM_REVERSE_SERVICE_URL=http://localhost:3001

Routes

Development

pnpm install
pnpm dev

Open http://localhost:3000.

pnpm build
pnpm start
pnpm lint