Is this website ready for AI agents?
MarkosWeb measures how well any website can be read, trusted and transacted with by AI agents. Look up any site - if we have not audited it yet, we audit it on the spot.
Startup ideas, measured
The same approach applied to startups instead of websites: 20,500 companies from six accelerator portfolios, classified, followed and checked against what investors are asking for.
Where startups and capital are heading
Cluster shares across YC batches, what happened to last season's companies, and which themes are getting crowded.
Is your idea already taken?
Describe an idea in a few words and see how many tracked startups are already building it - and how many are still alive.
Gaps worth building
What Y Combinator is asking founders to build, against how many companies actually build it.
Browse by category
Every category is ranked by measured AI readiness.
The agentic frontier
Sites with llms.txt
Only 6.4% of 48,005 active sites publish an llms.txt for AI agents. See who does.
Verified by their owners
Profiles claimed by the people behind the site: ownership proven, facts published with provenance.
datasub.com ✓ verified
Data Subsystems Inc - AI software developers, building production AI systems since 2008. Ownership confirmed; facts provided by the owner.
Verify your domain
Prove ownership in two minutes - DNS record, meta tag, or a file. Get the Verified mark, add your own facts, and show the live score badge. Free; scores can be improved, never bought. How it works.
Guides
What is llms.txt?
Format, example, plugins - and real adoption data.
Agentic readiness checklist
All 30 measured signals, with how to fix each.
AI crawlers & robots.txt
GPTBot, ClaudeBot, Perplexity - three ready policies.
For people
See whether a site is legitimate, active and safe to deal with before you or your assistant transact.
For AI engines
Structured, cite-able facts for the "is {domain} legit / ready for agents" question.
For agents
Machine-readable readiness at /api/v1/domains/{domain}.json.
Browse the full directory → - tags, A-Z, extensions, hosting