---
title: "Sitebulb Labs Extension · Sitebulb Labs"
description: "Find out how well AI agents can discover, read and use your website. The Sitebulb Labs Chrome extension checks access rules, content and protocols in your browser."
url: https://labs.sitebulb.com/
---

# Can AI agents read your site?

Check your site’s AI access rules, content and protocols in your browser.

[Get the extension](https://labs.sitebulb.com/docs/getting-started) [See the checks](https://labs.sitebulb.com/docs/checks)

For now, you’ll need to install from source. It’s not on the Chrome Web Store yet.

## How it works

Check the page you’re browsing and see what needs attention.

1. ### Open the extension

   Visit a page and open the extension from your toolbar. You can also keep it open in Chrome’s side panel, where it scans again when you browse to another site.

2. ### Run the checks locally

   Checks run in your browser. Requests go directly to the site, or to agent endpoints it declares; an optional DNS lookup sends its hostname to Cloudflare. Results stay on your machine, and you can check staging sites behind a VPN too.

3. ### Review the results

   Each warning or failed check shows what the extension found and how to fix it. Category scores give you an overview, and priority fixes rank what to do next by how much agents rely on it. You can export the results as Markdown, CSV or JSON.

## What we check

01Discoverability

1. robots.txt
2. Sitemap
3. Link headers
4. Agent-friendly 404s
5. Redirect hygiene
6. Sitemap freshness
7. DNS-AID
8. ARD catalog
9. ARD entries
10. ARD trust manifest
11. NLWeb feeds
12. Content without JS
13. Markdown negotiation
14. Markdown Vary
15. llms.txt links
16. Entity linking
17. Organization schema
18. Schema breadth
19. Structured data
20. Markdown .md URLs
21. Markdown alternate
22. llms.txt
23. Modular llms.txt
24. Speakable
25. AI bot rules
26. Agent-user policy
27. Content Signals
28. Web Bot Auth
29. MCP Server Card
30. API Catalog
31. Rate limit headers
32. OAuth Server
33. OAuth Resource
34. Agent Skills
35. WebMCP
36. A2A Agent Card
37. Content efficiency
38. Token budget
39. Metadata
40. Trust anchors
41. Document structure
42. Native controls
43. Accessible names
44. Form labels
45. Injection safety
46. Pagination signals
47. x402
48. MPP
49. UCP
50. ACP

## Check your site in your browser.

Install the extension to check what AI agents can access on your site. You’ll get the results alongside the page, with advice on fixing any issues.

[Get the extension](https://labs.sitebulb.com/docs/getting-started) [See the checks](https://labs.sitebulb.com/docs/checks)

Follow the setup guide to install from source.