# Dualmark

> Open-source AEO infrastructure for marketing sites.

Your blog ranks #1 on Google. ChatGPT cites your competitor.

That's not a content problem. It's an **infrastructure problem**. AI search engines (ChatGPT, Claude, Perplexity, Gemini, Google AI Overviews) read the web differently from humans -- they want clean markdown without nav chrome, JavaScript, or cookie banners. Most marketing sites give them HTML soup and wonder why they get ignored.

**Dualmark gives every page a markdown twin.** Same URL. Two formats. Picked by HTTP content negotiation. Drop into your Astro/Next.js/Cloudflare stack in 30 seconds. Score it with `dualmark verify`.

## Quickstart

```bash
bun add @dualmark/astro
```

See https://dualmark.dev/docs/quickstart for the full integration guide.

## What's in the box

- `@dualmark/core` -- framework-agnostic primitives (content negotiation, AI bot detection, markdown response builder)
- `@dualmark/astro` -- Astro 5 integration
- `@dualmark/cloudflare` -- Workers edge adapter
- `@dualmark/cli` -- `dualmark verify` conformance test runner
- `@dualmark/converters` -- 12 production-tested page-type converters

## Links

- Documentation: https://dualmark.dev/docs
- Playground (score any URL): https://dualmark.dev/play
- AEO Spec v1.0: https://dualmark.dev/docs/spec/overview
- GitHub: https://github.com/dodopayments/dualmark
- llms.txt: https://dualmark.dev/llms.txt

## License

MIT