# Let The Bots In > Free AI-readiness checker. Paste any URL and find out whether ChatGPT, > Claude, Perplexity, and Gemini can reach, read, and cite it, plus the > exact fixes, free, with nothing held back. Let The Bots In is a personal project (not a company) built by Aditya R. Singh. It runs six live checks: access, readability, structured data, authority and entity signals, extractability, and freshness and hygiene. Returns a 0-100 score with a full per-bot Crawler Gate. Scans are stateless: nothing about the site you check is stored. ## Key pages - [Checker](https://letthebots.in/): Paste a URL to run a free AI-readiness scan - [How It Works](https://letthebots.in/how-it-works): The full scoring methodology — every request, detection rule, and point value - [Compare](https://letthebots.in/compare): Score your site against up to two competitors - [GEO Guide](https://letthebots.in/learn/geo): What is Generative Engine Optimization? - [robots.txt Guide](https://letthebots.in/learn/robots-txt-ai-bots): How to configure robots.txt for AI bots - [AI Citations](https://letthebots.in/learn/ai-citations): How the retrieval pipeline behind AI answers works - [Structured Data](https://letthebots.in/learn/structured-data): Which schema.org types matter for AI visibility - [llms.txt Guide](https://letthebots.in/learn/llms-txt): What this file is and whether you need one - [Glossary](https://letthebots.in/glossary): 40+ GEO and AI-crawler terms defined - [About](https://letthebots.in/about): Why this exists and how it's built - [Privacy](https://letthebots.in/privacy): What data is collected (almost none) and why ## Do not index - /r/: per-scan report pages, ephemeral and not meant to be cited