---
title: "agent-seo — Make any website AI-readable | agent-seo"
description: "Open-source TypeScript SDK that serves clean Markdown to AI crawlers while serving HTML to browsers."
url: "https://agent-seo-docs.vercel.app/"
lang: "en"
schema: "WebSite"
---

Open Source

# Make any website  
AI-readable

Open-source TypeScript SDK that serves clean Markdown to AI crawlers while serving HTML to browsers. Zero config.

[Get Started](https://agent-seo-docs.vercel.app/quickstart)[GitHub](https://github.com/pontiggia/agent-seo)

npmpnpmyarnbun

`$ npm install @agent-seo/next`

## How It Works

Same URL, different response based on who's asking.

Incoming Request

GET/about

agent-seo

Checks User-Agent header

Browser

HTML

Normal response

AI Bot

Markdown

Clean & compact

Also Available

`/about.md`Explicit Markdown for any page

`/llms.txt`Auto-generated site directory for AI

`/robots.txt`AI-friendly rules referencing /llms.txt

Transform Pipeline

JSDOMReadabilitySanitizeTurndownFrontmatter

Bot Detection

19 AI crawlers

GPTBot, ClaudeBot, PerplexityBot, Google-Extended, and 15 more detected automatically via User-Agent.

## Benchmark

Dramatic reduction in size and token usage.

HTML

96,996

bytes

24,238

tokens

Markdown

85% smaller

14,604

bytes

3,651

tokens

## All Packages

Everything you need, nothing you don't.

[

@agent-seo/core

HTML-to-Markdown engine, bot detection, route discovery

](https://www.npmjs.com/package/@agent-seo/core)[

@agent-seo/next

Next.js plugin with zero-config setup

](https://www.npmjs.com/package/@agent-seo/next)[

@agent-seo/express

Express middleware adapter

](https://www.npmjs.com/package/@agent-seo/express)[

@agent-seo/fastify

Fastify plugin adapter

](https://www.npmjs.com/package/@agent-seo/fastify)[

@agent-seo/hono

Hono middleware adapter

](https://www.npmjs.com/package/@agent-seo/hono)[

@agent-seo/cli

CLI audit tool — AI Visibility Score

](https://www.npmjs.com/package/@agent-seo/cli)

## Documentation

[

### Quick Start→

Get up and running in minutes

](https://agent-seo-docs.vercel.app/quickstart)[

### API Reference→

Functions, options, and headers

](https://agent-seo-docs.vercel.app/api-reference)[

### Supported Bots→

19 AI crawlers detected

](https://agent-seo-docs.vercel.app/bots)[

### CLI Audit→

AI Visibility Score (0-100)

](https://agent-seo-docs.vercel.app/cli)